New Features
* Added `link_overrides` field to `hexdoc.toml`, for patching broken inter-mod links.
* Created a couple of [Shields.io](https://shields.io) badges for hexdoc.
* Started keeping a changelog!
Changes
* ⚠️ BREAKING: Completely reworked the validation context system. Context is now a dict (returning to the Pydantic standard), and classes can now inherit from `hexdoc.utils.ValidationContext` to get the methods `.of()` and `.add_to_context()`. `BookContext` is no longer the god object for all validation context.
* Moved Hatch to a required dependency, from `[pdoc]`.
* Slightly tweaked the page footer text.
Fixes
* Fixed an issue that was preventing CI plugin builds from being copied to the Pages branch.
* Fixed category spoilers not taking external entries into account.