docs: add 2.0.4 docs

Signed-off-by: Brian McGee <brian@bmcgee.ie>

docs/.vitepress/config.mts

@@ -20,7 +20,7 @@ const sidebar = {
 }
 
 // static version list, KISS
-const versions = ["v2.0.1", "v2.0.2", "v2.0.3"]
+const versions = ["v2.0.1", "v2.0.2", "v2.0.3", "v2.0.4"]
 
 versions.forEach(version => {
   sidebar[`/${version}/`] = sidebar["/"].map(({ text, link }) => ({ text, link: `/${version}${link}`}))

docs/versions/v2.0.4/about.md

@@ -0,0 +1,73 @@
+# About the project
+
+`treefmt` is a formatting tool that saves you time: it provides developers with a universal way to trigger all
+formatters needed for the project in one place.
+
+## Background
+
+Typically, each project has its own code standards enforced by the project's owner. Any code contributions must match
+that given standard, i.e. be formatted in a specific manner.
+
+At first glance, the task of code formatting may seem trivial: the formatter can be automatically triggered when you
+save a file in your IDE. Indeed, formatting doesn't take much effort if you're working on a single project long term:
+setting up the formatters in your IDE won't take much of your time, and then you're ready to go.
+
+Contrary to that, if you're working on multiple projects at the same time, you may have to update your formatter
+configs in the IDE each time you switch between the projects. This is because formatter settings aren't
+project-specific --- they are set up globally for all projects.
+
+Alternatively, you can trigger formatters manually, one-by-one or in a script. Actually, for bigger projects, it's
+common to have a script that runs over your project's directories and calls formatters consequently. But it takes time
+to iterate through all the files.
+
+All the solutions take up a significant amount of time which a developer could spend doing the actual work. They also
+require you to remember which formatters and options are used by each project you are working on.
+
+`treefmt` solves these issues.
+
+## Why treefmt?
+
+`treefmt`'s configuration is project-specific, so you don't need to re-configure formatters each time you switch
+between projects, like you have to when working with formatters in the IDE.
+
+Contrary to calling formatters from the command line, there's no need to remember all the specific formatters required
+for each project. Once you set up the config, you can run the tool in any of your project's folders without any
+additional flags or options.
+
+Typically, formatters have different ways to say there was a specific error. With `treefmt`, you get a standardized
+output which is easier to understand than the variegated outputs of different formatters, so it takes less time to
+grasp what's wrong.
+
+In addition, `treefmt` works faster than the custom script solution because the changed files are cached and the
+formatters run only against them. Moreover, formatters are run in parallel, which makes the tool even faster.
+
+The difference may not be significant for smaller projects, but it gets quite visible as the project grows. For
+instance, take the caching optimization.
+
+It takes about 23 seconds to traverse a project of 40,559 files and no changes without caching:
+
+```console
+traversed 41273 files
+emitted 41273 files for processing
+formatted 34111 files (14338 changed) in 23.679s
+```
+
+...while it takes **239 milliseconds** to traverse the same project with caching:
+
+```console
+traversed 41273 files
+emitted 0 files for processing
+formatted 0 files (0 changed) in 239ms
+```
+
+The tool can be invoked manually or integrated into your CI. There's currently no integration with IDEs, but the feature is coming soon.
+
+## What we still need help with
+
+-   **IDE integration:** Most of developers are used to formatting a file upon save in the IDE. So far, you can't use `treefmt` for this purpose, but we're working on it 😀
+-   **Pre-commit hook:** It's good to have your code checked for adherence to the project's standards before commit. `treefmt` pre-commit hook won't let you commit if you have formatting issues.
+
+As a next step, learn how to [install] and [run] `treefmt`.
+
+[install]: install.md
+[run]: usage.md

docs/versions/v2.0.4/configure.md

@@ -0,0 +1,89 @@
+---
+outline: deep
+---
+
+# Configure Treefmt
+
+The `treefmt.toml` configuration file consists of a mixture of global options and formatter sections:
+
+```toml
+[global]
+excludes = ["*.md", "*.dat"]
+
+[formatter.elm]
+command = "elm-format"
+options = ["--yes"]
+includes = ["*.elm"]
+
+[formatter.go]
+command = "gofmt"
+options = ["-w"]
+includes = ["*.go"]
+
+[formatter.python]
+command = "black"
+includes = ["*.py"]
+
+# use the priority field to control the order of execution
+
+# run shellcheck first
+[formatter.shellcheck]
+command = "shellcheck"
+includes = ["*.sh"]
+priority = 0    # default is 0, but we set it here for clarity
+
+# shfmt second
+[formatter.shfmt]
+command = "shfmt"
+options = ["-s", "-w"]
+includes = ["*.sh"]
+priority = 1
+```
+
+## Global Options
+
+-   `excludes` - an optional list of [glob patterns](#glob-patterns-format) used to exclude certain files from all formatters.
+
+## Formatter Options
+
+-   `command` - the command to invoke when applying the formatter.
+-   `options` - an optional list of args to be passed to `command`.
+-   `includes` - a list of [glob patterns](#glob-patterns-format) used to determine whether the formatter should be applied against a given path.
+-   `excludes` - an optional list of [glob patterns](#glob-patterns-format) used to exclude certain files from this formatter.
+-   `priority` - influences the order of execution. Greater precedence is given to lower numbers, with the default being `0`.
+
+## Same file, multiple formatters?
+
+For each file, `treefmt` determines a list of formatters based on the configured `includes` / `excludes` rules. This list is
+then sorted, first by priority (lower the value, higher the precedence) and secondly by formatter name (lexicographically).
+
+The resultant sequence of formatters is used to create a batch key, and similarly matched files get added to that batch
+until it is full, at which point the files are passed to each formatter in turn.
+
+This means that `treefmt` **guarantees only one formatter will be operating on a given file at any point in time**.
+Another consequence is that formatting is deterministic for a given file and a given `treefmt` configuration.
+
+By setting the priority fields appropriately, you can control the order in which those formatters are applied for any
+files they _both happen to match on_.
+
+## Glob patterns format
+
+This is a variant of the Unix glob pattern. It supports all the usual
+selectors such as `*` and `?`.
+
+### Examples
+
+-   `*.go` - match all files in the project that end with a ".go" file extension.
+-   `vendor/*` - match all files under the vendor folder, recursively.
+
+## Supported Formatters
+
+Any formatter that follows the [spec] is supported out of the box.
+
+Already 60+ formatters are supported.
+
+To find examples, take a look at <https://github.com/numtide/treefmt-nix/tree/main/examples>.
+
+If you are a Nix user, you might also like <https://github.com/numtide/treefmt-nix>, which uses Nix to pull in the right formatter package and seamlessly integrates both together.
+
+[spec]: formatter-spec.md

docs/versions/v2.0.4/contributing.md

@@ -0,0 +1,142 @@
+---
+outline: deep
+---
+
+# Contribution guidelines
+
+This file contains instructions that will help you make a contribution.
+
+## Licensing
+
+The `treefmt` binaries and this user guide are licensed under the [MIT license](https://github.com/numtide/treefmt/blob/main/LICENSE).
+
+## Before you contribute
+
+Here you can take a look at the [existing issues](https://github.com/numtide/treefmt/issues). Feel free to contribute, but make sure you have a
+[GitHub account](https://github.com/join) first :slightly_smiling_face:.
+
+If you're new to open source, please read GitHub's guide on [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/). It's a quick read,
+and it's a great way to introduce yourself to how things work behind the scenes in open-source projects.
+
+Before sending a pull request, make sure that you've read all the guidelines. If you don't understand something, please
+[state your question clearly in an issue](https://github.com/numtide/treefmt/issues/new) or ask the community on the [treefmt matrix server](https://matrix.to/#/#treefmt:numtide.com).
+
+## Creating an issue
+
+If you need to create an issue, make sure to clearly describe it, including:
+
+-   The steps to reproduce it (if it's a bug)
+-   The version of `treefmt` used
+
+The cache database is stored in a `.db` file in the `~/.cache/treefmt/eval-cache` directory.
+
+## Making changes
+
+If you want to introduce changes to the project, please follow these steps:
+
+-   Fork the repository on GitHub
+-   Create a branch on your fork. Don't commit directly to main
+-   Add the necessary tests for your changes
+-   Run `treefmt` in the source directory before you commit your changes
+-   Push your changes to the branch in your repository fork
+-   Submit a pull request to the original repository
+
+Make sure you based your commits on logical and atomic units!
+
+## Examples of git history
+
+<details>
+
+<summary>Git history that we want to have</summary>
+
+```
+
+*   e3ed88b (HEAD -> contribution-guide, upstream/main, origin/main, origin/HEAD, main) Merge pull request #470 from zimbatm/fix_lru_cache
+
+|\
+
+| * 1ab7d9f Use rayon for multithreading command
+
+|/
+
+*   e9c5bb4 Merge pull request #468 from zimbatm/multithread
+
+|\
+
+| * de2d6cf Add lint property for Formatter struct
+
+| * cd2ed17 Fix impl on Formatter get_command() function
+
+|/
+
+*   028c344 Merge pull request #465 from rayon/0.15.0-release
+
+|\
+
+| * 7b619d6 0.15.0 release
+
+|/
+
+*   acdf7df Merge pull request #463 from zimbatm/support-multi-part-namespaces
+
+```
+
+</details>
+
+<details>
+
+<summary>Git history that we are <b>trying</b> to avoid</summary>
+
+```
+
+*   4c8aca8 Merge pull request #120 from zimbatm/add-rayon
+
+|\
+
+| * fc2b449 use rayon for engine now
+
+| * 2304683 add rayon config
+
+| * 5285bd3 bump base image to F30
+
+* |   4d0fbe2 Merge pull request #114 from rizary/create_method_create_release
+
+|\ \
+
+| * | 36a9396 test changed
+
+| * | 22f681d method create release for github created
+
+* | |   2ef4ea1 Merge pull request #119 from rizary/config.rs
+
+|\ \ \
+
+| |/ /
+
+|/| |
+
+| * | 5f1b8f0 unused functions removed
+
+* | |   a93c361 Merge pull request #117 from zimbatm/add-getreleases-to-abstract
+
+|\ \ \
+
+| |/ /
+
+|/| |
+
+| * | 0a97236 add get_releses for Cargo
+
+| * | 55e4c57 add get_releases/get_release into engine.rs
+
+|/ /
+
+* |   badeddd Merge pull request #101 from zimbatm/extreme-cachin
+
+```
+
+</details>
+
+Additionally, it's always good to work on improving documentation and adding examples.
+
+Thank you for considering contributing to `treefmt`.

docs/versions/v2.0.4/faq.md

@@ -0,0 +1,28 @@
+# FAQ
+
+## How does treefmt function?
+
+`Treefmt` traverses all your project's folders, maps files to specific code formatters, and formats the code
+accordingly. Other tools also traverse the filesystem, but not necessarily starting from the root of the project.
+
+Contrary to other formatters, `treefmt` doesn't preview the changes before writing them to a file. If you want to view
+the changes, you can always check the diff in your version control (we assume that your project is checked into a
+version control system).
+
+You can also rely on version control if errors were introduced into your code as a result of disruptions in the
+formatter's work.
+
+## How is the cache organized?
+
+At the moment, the cache is a [BoltDB] database file in which file paths are mapped to `mtimes`.
+
+The file is located in:
+
+```
+~/.cache/treefmt/eval-cache/<hash-of-the-treefmt.toml-path>.db
+```
+
+At the end of each run, the database is updated with the last formatting time entries. In this way, we can
+compare the last change time of the file to the last formatting time, and figure out which files need re-formatting.
+
+[BoltDB]: https://github.com/etcd-io/bbolt