feat: infer config file depending on platform with appdirs

docs/usage.md

@@ -419,8 +419,11 @@ in this particular order:
     * `.git-changelog.toml`
     * `config/git-changelog.toml`
     * `.config/git-changelog.toml`
-    * `~/.config/git-changelog.toml`
+    * `<current-user-config-path>/git-changelog.toml`
 
+In the last case (`<current-user-config-path>/git-changelog.toml`), the `<current-user-config-path>`
+is platform-dependent and will be automatically inferred from your settings.
+In Unix systems, this will typically point at `$HOME/.config/git-changelog.toml`.
 The use of a configuration file can be disabled or overridden with the `--config-file`
 option.
 To disable the configuration file, pass `no`, `none`, `false`, `off`, `0` or empty string (`''`):

pyproject.toml

@@ -34,6 +34,7 @@ classifiers = [
     "Typing :: Typed",
 ]
 dependencies = [
+    "appdirs",
     "Jinja2>=2.10,<4",
     "semver>=2.13",
     "toml>=0.10",

src/git_changelog/cli.py

@@ -21,6 +21,7 @@
 from typing import Pattern, TextIO
 
 import toml
+from appdirs import user_config_dir
 from jinja2.exceptions import TemplateNotFound
 
 from git_changelog import templates
@@ -42,7 +43,7 @@
     ".git-changelog.toml",
     "config/git-changelog.toml",
     ".config/git-changelog.toml",
-    str(Path.home() / ".config" / "git-changelog.toml"),
+    str(Path(user_config_dir()) / "git-changelog.toml"),
 ]
 
 DEFAULT_SETTINGS = {