diff --git a/Cargo.lock b/Cargo.lock
index 9aad550..22bf16a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -15,7 +15,7 @@ dependencies = [
  "bytes",
  "crossbeam-channel",
  "derive_more 0.14.1",
- "futures",
+ "futures 0.1.31",
  "hashbrown 0.3.1",
  "lazy_static",
  "log",
@@ -36,7 +36,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f2c11af4b06dc935d8e1b1491dad56bfb32febc49096a91e773f8535c176453"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "log",
  "tokio-codec",
  "tokio-io",
@@ -54,7 +54,7 @@ dependencies = [
  "actix-utils",
  "derive_more 0.15.0",
  "either",
- "futures",
+ "futures 0.1.31",
  "http",
  "log",
  "tokio-current-thread",
@@ -71,7 +71,7 @@ dependencies = [
  "actix-service",
  "actix-web",
  "derive_more 0.14.1",
- "futures",
+ "futures 0.1.31",
 ]
 
 [[package]]
@@ -86,7 +86,7 @@ dependencies = [
  "actix-service",
  "actix-threadpool",
  "actix-utils",
- "base64",
+ "base64 0.10.1",
  "bitflags",
  "brotli2",
  "bytes",
@@ -97,7 +97,7 @@ dependencies = [
  "encoding_rs",
  "failure",
  "flate2",
- "futures",
+ "futures 0.1.31",
  "h2",
  "hashbrown 0.6.3",
  "http",
@@ -144,7 +144,7 @@ checksum = "88c9da1d06603d82ec2b6690fc5b80eb626cd2d6b573f3d9a71d5252e06d098e"
 dependencies = [
  "actix-threadpool",
  "copyless",
- "futures",
+ "futures 0.1.31",
  "tokio-current-thread",
  "tokio-executor",
  "tokio-reactor",
@@ -160,7 +160,7 @@ dependencies = [
  "actix-rt",
  "actix-server-config",
  "actix-service",
- "futures",
+ "futures 0.1.31",
  "log",
  "mio",
  "net2",
@@ -179,7 +179,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "483a34989c682d93142bacad6300375bb6ad8002d2e0bb249dbad86128b9ff30"
 dependencies = [
- "futures",
+ "futures 0.1.31",
  "tokio-io",
  "tokio-tcp",
 ]
@@ -190,7 +190,7 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bca5b48e928841ff7e7dce1fdb5b0d4582f6b1b976e08f4bac3f640643e0773f"
 dependencies = [
- "futures",
+ "futures 0.1.31",
 ]
 
 [[package]]
@@ -203,7 +203,7 @@ dependencies = [
  "actix-server",
  "actix-server-config",
  "actix-service",
- "futures",
+ "futures 0.1.31",
  "log",
  "net2",
  "tokio-reactor",
@@ -217,7 +217,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6b5ae85d13da7e6fb86b1b7bc83185e0e3bd4cc5f421c887e1803796c034d35d"
 dependencies = [
  "derive_more 0.15.0",
- "futures",
+ "futures 0.1.31",
  "lazy_static",
  "log",
  "num_cpus",
@@ -235,7 +235,7 @@ dependencies = [
  "actix-service",
  "bytes",
  "either",
- "futures",
+ "futures 0.1.31",
  "log",
  "tokio-current-thread",
  "tokio-timer",
@@ -262,7 +262,7 @@ dependencies = [
  "bytes",
  "derive_more 0.15.0",
  "encoding_rs",
- "futures",
+ "futures 0.1.31",
  "hashbrown 0.6.3",
  "log",
  "mime",
@@ -282,9 +282,9 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "068a33520e21c1eea89726be4d6b3ce2e6b81046904367e1677287695a043abb"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -346,6 +346,23 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "ascii"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eab1c04a571841102f5345a8fc0f6bb3d31c315dec879b5c6e42e40ce7ffa34e"
+
+[[package]]
+name = "async-trait"
+version = "0.1.56"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96cf8829f67d2eab0b2dfa42c5d0ef737e0724e4a82b01b3e292456202b19716"
+dependencies = [
+ "proc-macro2 1.0.42",
+ "quote 1.0.9",
+ "syn 1.0.98",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -378,10 +395,10 @@ dependencies = [
  "actix-codec",
  "actix-http",
  "actix-service",
- "base64",
+ "base64 0.10.1",
  "bytes",
  "derive_more 0.15.0",
- "futures",
+ "futures 0.1.31",
  "log",
  "mime",
  "percent-encoding 2.1.0",
@@ -416,6 +433,12 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "base64"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -483,6 +506,23 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "bson"
+version = "1.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de0aa578035b938855a710ba58d43cfb4d435f3619f99236fb35922a574d6cb1"
+dependencies = [
+ "base64 0.13.0",
+ "chrono",
+ "hex",
+ "lazy_static",
+ "linked-hash-map",
+ "rand 0.7.3",
+ "serde",
+ "serde_json",
+ "uuid 0.8.2",
+]
+
 [[package]]
 name = "bstr"
 version = "0.2.16"
@@ -548,9 +588,9 @@ dependencies = [
  "phf",
  "phf_codegen",
  "pretty_env_logger",
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -602,6 +642,19 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "combine"
+version = "3.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da3da6baa321ec19e1cc41d31bf599f00c783d0517095cdaf0332e3fe8d20680"
+dependencies = [
+ "ascii",
+ "byteorder",
+ "either",
+ "memchr",
+ "unreachable",
+]
+
 [[package]]
 name = "comde"
 version = "0.2.2"
@@ -814,7 +867,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e98e2ad1a782e33928b96fc3948e7c355e5af34ba4de7670fe8bac2a3b2006d"
 dependencies = [
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -875,10 +928,10 @@ checksum = "f0c960ae2da4de88a91b2d920c2a7233b400bc33cb28453a2987822d8392519b"
 dependencies = [
  "fnv",
  "ident_case",
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
  "strsim 0.9.3",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -900,7 +953,7 @@ checksum = "d9b5a2f4ac4969822c62224815d069952656cadc7084fdca9751e6d959189b72"
 dependencies = [
  "darling_core 0.10.2",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -909,9 +962,9 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9521a61c2b177e0515b69dd1bd0f396a6b322832c54b4ba03cd33030ff6014b"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -965,6 +1018,17 @@ dependencies = [
  "syn 0.15.44",
 ]
 
+[[package]]
+name = "derive_utils"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "532b4c15dccee12c7044f1fcad956e98410860b22231e44a3b827464797ca7bf"
+dependencies = [
+ "proc-macro2 1.0.42",
+ "quote 1.0.9",
+ "syn 1.0.98",
+]
+
 [[package]]
 name = "digest"
 version = "0.8.1"
@@ -1009,7 +1073,7 @@ dependencies = [
  "divvunspell",
  "env_logger",
  "failure",
- "futures",
+ "futures 0.1.31",
  "hashbrown 0.9.1",
  "juniper",
  "log",
@@ -1115,9 +1179,9 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
  "synstructure",
 ]
 
@@ -1239,16 +1303,88 @@ version = "0.1.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a471a38ef8ed83cd6e40aa59c1ffe17db6855c18e3604d9c4ed8c08ebc28678"
 
+[[package]]
+name = "futures"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f73fe65f54d1e12b726f517d3e2135ca3125a437b6d998caf1962961f7172d9e"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-channel"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
+
 [[package]]
 name = "futures-cpupool"
 version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
 dependencies = [
- "futures",
+ "futures 0.1.31",
  "num_cpus",
 ]
 
+[[package]]
+name = "futures-enum"
+version = "0.1.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3422d14de7903a52e9dbc10ae05a7e14445ec61890100e098754e120b2bd7b1e"
+dependencies = [
+ "derive_utils",
+ "quote 1.0.9",
+ "syn 1.0.98",
+]
+
+[[package]]
+name = "futures-io"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
+
+[[package]]
+name = "futures-sink"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21163e139fa306126e6eedaf49ecdb4588f939600f0b1e770f4205ee4b7fa868"
+
+[[package]]
+name = "futures-task"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
+
+[[package]]
+name = "futures-util"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+ "futures-task",
+ "pin-project-lite",
+ "pin-utils",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.12.4"
@@ -1321,6 +1457,16 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "graphql-parser"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1abd4ce5247dfc04a03ccde70f87a048458c9356c7e41d21ad8c407b3dde6f2"
+dependencies = [
+ "combine",
+ "thiserror",
+]
+
 [[package]]
 name = "h2"
 version = "0.1.26"
@@ -1330,7 +1476,7 @@ dependencies = [
  "byteorder",
  "bytes",
  "fnv",
- "futures",
+ "futures 0.1.31",
  "http",
  "indexmap",
  "log",
@@ -1383,6 +1529,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
 [[package]]
 name = "hostname"
 version = "0.3.1"
@@ -1412,7 +1564,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6741c859c1b2463a423a1dbce98d418e6c3c3fc720fb0d45528657320920292d"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "http",
  "tokio-buf",
 ]
@@ -1439,7 +1591,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c843caf6296fc1f93444735205af9ed4e109a539005abb2564ae1d6fad34c52"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "futures-cpupool",
  "h2",
  "http",
@@ -1469,7 +1621,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a800d6aa50af4b5850b2b0f659625ce9504df908e9733b635720483be26174f"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "hyper",
  "native-tls",
  "tokio-io",
@@ -1605,31 +1757,36 @@ checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
 [[package]]
 name = "juniper"
-version = "0.13.1"
+version = "0.15.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b570603cc5ea362590965be2d201f24c5e39f2675953d46813ea4c5f7a34e75c"
+checksum = "4f478f229a8ab52ff242f3250c8b3b8fe0a59b5b934f9706b7bdbc980991a7b6"
 dependencies = [
+ "async-trait",
+ "bson",
  "chrono",
  "fnv",
+ "futures 0.3.21",
+ "futures-enum",
+ "graphql-parser",
  "indexmap",
  "juniper_codegen",
  "serde",
- "serde_derive",
- "url 1.7.2",
- "uuid",
+ "smartstring",
+ "static_assertions",
+ "url 2.2.1",
+ "uuid 0.8.2",
 ]
 
 [[package]]
 name = "juniper_codegen"
-version = "0.13.2"
+version = "0.15.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "230e99ba589c473bb53d33bf4bd9aedcb7069c50b336bb76dcff9f69a1b19418"
+checksum = "aee97671061ad50301ba077d054d295e01d31a1868fbd07902db651f987e71db"
 dependencies = [
- "lazy_static",
- "proc-macro2 0.4.30",
- "quote 0.6.13",
- "regex",
- "syn 0.15.44",
+ "proc-macro-error",
+ "proc-macro2 1.0.42",
+ "quote 1.0.9",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -2130,9 +2287,9 @@ checksum = "99b8db626e31e5b81787b9783425769681b347011cc59471e33ea46d2ea0cf55"
 dependencies = [
  "pest",
  "pest_meta",
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -2204,6 +2361,12 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc0e1f259c92177c30a4c9d177246edd0a3568b25756a977d0632cf8fa37e905"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.19"
@@ -2226,6 +2389,30 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2 1.0.42",
+ "quote 1.0.9",
+ "syn 1.0.98",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2 1.0.42",
+ "quote 1.0.9",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro-hack"
 version = "0.5.19"
@@ -2243,11 +2430,11 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.26"
+version = "1.0.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a152013215dca273577e18d2bf00fa862b89b24169fb78c4c95aeb07992c9cec"
+checksum = "c278e965f1d8cf32d6e0e96de3d3e79712178ae67986d9cf9151f51e95aac89b"
 dependencies = [
- "unicode-xid 0.2.2",
+ "unicode-ident",
 ]
 
 [[package]]
@@ -2281,7 +2468,7 @@ version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
 ]
 
 [[package]]
@@ -2565,13 +2752,13 @@ version = "0.9.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f88643aea3c1343c804950d7bf983bd2067f5ab59db6d613a08e05572f2714ab"
 dependencies = [
- "base64",
+ "base64 0.10.1",
  "bytes",
  "cookie",
  "cookie_store",
  "encoding_rs",
  "flate2",
- "futures",
+ "futures 0.1.31",
  "http",
  "hyper",
  "hyper-tls",
@@ -2589,7 +2776,7 @@ dependencies = [
  "tokio-threadpool",
  "tokio-timer",
  "url 1.7.2",
- "uuid",
+ "uuid 0.7.4",
  "winreg",
 ]
 
@@ -2714,9 +2901,9 @@ version = "1.0.125"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b093b7a2bb58203b5da3056c05b4ec1fed827dcfdb37347a8841695263b3d06d"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -2725,6 +2912,7 @@ version = "1.0.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "799e97dc9fdae36a5c8b8f2cae9ce2ee9fdce2058c57a93e6099d919fd982f79"
 dependencies = [
+ "indexmap",
  "itoa",
  "ryu",
  "serde",
@@ -2818,6 +3006,15 @@ version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
+[[package]]
+name = "smartstring"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e714dff2b33f2321fdcd475b71cec79781a692d846f37f415fb395a1d2bcd48e"
+dependencies = [
+ "static_assertions",
+]
+
 [[package]]
 name = "smol_str"
 version = "0.1.17"
@@ -2838,6 +3035,12 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
+
 [[package]]
 name = "string"
 version = "0.2.1"
@@ -2884,13 +3087,13 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.72"
+version = "1.0.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1e8cdbefb79a9a5a65e0db8b47b723ee907b7c7f8496c76a1770b5c310bab82"
+checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "unicode-xid 0.2.2",
+ "unicode-ident",
 ]
 
 [[package]]
@@ -2899,9 +3102,9 @@ version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
  "unicode-xid 0.2.2",
 ]
 
@@ -2973,9 +3176,9 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7765189610d8241a44529806d6fd1f2e0a08734313a35d5b3a556f92b381f3c0"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -3038,7 +3241,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a09c0b5bb588872ab2f09afa13ee6e9dac11e10a0ec9e8e3ba39a5a5d530af6"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "mio",
  "num_cpus",
  "tokio-current-thread",
@@ -3058,7 +3261,7 @@ checksum = "8fb220f46c53859a4b7ec083e41dec9778ff0b1851c0942b211edb89e0ccdc46"
 dependencies = [
  "bytes",
  "either",
- "futures",
+ "futures 0.1.31",
 ]
 
 [[package]]
@@ -3068,7 +3271,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25b2998660ba0e70d18684de5d06b70b70a3a747469af9dea7618cc59e75976b"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "tokio-io",
 ]
 
@@ -3078,7 +3281,7 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1de0e32a83f131e002238d7ccde18211c0a5397f60cbfffcb112868c2e0e20e"
 dependencies = [
- "futures",
+ "futures 0.1.31",
  "tokio-executor",
 ]
 
@@ -3089,7 +3292,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fb2d1b8f4548dbf5e1f7818512e9c406860678f29c300cdf0ebac72d1a3a1671"
 dependencies = [
  "crossbeam-utils 0.7.2",
- "futures",
+ "futures 0.1.31",
 ]
 
 [[package]]
@@ -3099,7 +3302,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57fc868aae093479e3131e3d165c93b1c7474109d13c90ec0dda2a1bbfff0674"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "log",
 ]
 
@@ -3110,7 +3313,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09bc590ec4ba8ba87652da2068d150dcada2cfa2e07faae270a5e0409aa51351"
 dependencies = [
  "crossbeam-utils 0.7.2",
- "futures",
+ "futures 0.1.31",
  "lazy_static",
  "log",
  "mio",
@@ -3128,7 +3331,7 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0c34c6e548f101053321cba3da7cbb87a610b85555884c41b07da2eb91aff12"
 dependencies = [
- "futures",
+ "futures 0.1.31",
  "libc",
  "mio",
  "mio-uds",
@@ -3146,7 +3349,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edfe50152bc8164fcc456dab7891fa9bf8beaf01c5ee7e1dd43a397c3cf87dee"
 dependencies = [
  "fnv",
- "futures",
+ "futures 0.1.31",
 ]
 
 [[package]]
@@ -3156,7 +3359,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "98df18ed66e3b72e742f185882a9e201892407957e45fbff8da17ae7a7c51f72"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "iovec",
  "mio",
  "tokio-io",
@@ -3172,7 +3375,7 @@ dependencies = [
  "crossbeam-deque",
  "crossbeam-queue",
  "crossbeam-utils 0.7.2",
- "futures",
+ "futures 0.1.31",
  "lazy_static",
  "log",
  "num_cpus",
@@ -3187,7 +3390,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "93044f2d313c95ff1cb7809ce9a7a05735b012288a888b62d4434fd58c94f296"
 dependencies = [
  "crossbeam-utils 0.7.2",
- "futures",
+ "futures 0.1.31",
  "slab",
  "tokio-executor",
 ]
@@ -3199,7 +3402,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2a0b10e610b39c38b031a2fcab08e4b82f16ece36504988dcbd81dbba650d82"
 dependencies = [
  "bytes",
- "futures",
+ "futures 0.1.31",
  "log",
  "mio",
  "tokio-codec",
@@ -3234,9 +3437,9 @@ version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c42e6fa53307c8a17e4ccd4dc81cf5ec38db9209f59b222210375b54ee40d1e2"
 dependencies = [
- "proc-macro2 1.0.26",
+ "proc-macro2 1.0.42",
  "quote 1.0.9",
- "syn 1.0.72",
+ "syn 1.0.98",
 ]
 
 [[package]]
@@ -3257,7 +3460,7 @@ dependencies = [
  "byteorder",
  "enum-as-inner",
  "failure",
- "futures",
+ "futures 0.1.31",
  "idna 0.1.5",
  "lazy_static",
  "log",
@@ -3281,7 +3484,7 @@ checksum = "6c9992e58dba365798803c0b91018ff6c8d3fc77e06977c4539af2a6bfe0a039"
 dependencies = [
  "cfg-if 0.1.10",
  "failure",
- "futures",
+ "futures 0.1.31",
  "ipconfig",
  "lazy_static",
  "log",
@@ -3538,6 +3741,12 @@ dependencies = [
  "matches",
 ]
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15c61ba63f9235225a22310255a29b806b907c9b8c964bcbd0a2c70f3f2deea7"
+
 [[package]]
 name = "unicode-normalization"
 version = "0.1.17"
@@ -3571,6 +3780,15 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
+[[package]]
+name = "unreachable"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
+dependencies = [
+ "void",
+]
+
 [[package]]
 name = "url"
 version = "1.7.2"
@@ -3603,6 +3821,12 @@ dependencies = [
  "rand 0.6.5",
 ]
 
+[[package]]
+name = "uuid"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc5cf98d8186244414c848017f0e2676b3fcb46807f6668a97dfe67359a3c4b7"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.12"
@@ -3621,6 +3845,12 @@ version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
 
+[[package]]
+name = "void"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
+
 [[package]]
 name = "walkdir"
 version = "2.3.2"
@@ -3638,7 +3868,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
 dependencies = [
- "futures",
+ "futures 0.1.31",
  "log",
  "try-lock",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index b206268..fcea1bf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,7 @@ actix-cors = "0.1.0"
 actix = "0.8.3"
 log = "0.4.11"
 env_logger = "0.7.1"
-juniper = "0.13.1"
+juniper = "0.15.10"
 serde = { version = "1.0.99", features = ["derive"] }
 serde_json = "1.0.40"
 divvunspell = { git = "https://github.com/divvun/divvunspell", branch="main", features=["compression"] }