Improve Test coverage

Switch to using mitchellh's zig-overlay

fix: fix warning emitted incorrectly when using ..

arqv stopped existing on GitHub, including his zig-overlay repository

- allow source files from tests as a package
- use `tests/tests.zig` as the entry point
- add `Co...

caused by missing files or weird file path starting
e.g.
```
pub const abc = @import(".////abc.z...

fixes zigtools#567

emit correct c preprocessor macro in convertCInclude

patch allocator mismatch in translate_c

unmanage all the code

Text format to return edited ranges instead of entire document

fix: fix memory leaks related to updating config variables

Fix Path <-> Uri mismatch

update README.md

adds an edge case in analysis.makeScopeInternal to prevent
leaking memory when adding duplicate ...

Add Cimport support

Update dependencies

Better handling for enum field signatures

make `zig build` work with latest master

Improve unused variable report accuracy

2 minor tidy-ups + fix for over-eager unused parameter error in function types

Improve CLI, fix leak, & other.

Refactor Ast helper functions

Only return highlights for symbols in current document

This seems to only occur when highlighting "field access" symbols, e.g.
"bar" in a statement suc...

chore(spelling): little typo

somthing -> something

Fix memory leaks

Semantic token for keyword 'undefined'

fix 'Cannot resolve std library import'

Correctly handle sentinel slices

Revive Session tests

* Actually a horrible patch

Update README.md and setup

- update notes for VS Code according to new changes in zls-vscode
- add instructions for setting ...

* Set include_at_in_builtins to false if Sublime Text version > 4000

* Implement textDocument/inlayHint

* Add corresponding Config options

Implement textDocument/documentHighlight

docs(neovim/vim): Update instruction for Coc

Highlight orelse as a keyword

Fix link to zigtools/zls#from-source

Add flake support

Simpler than using `fetchFromGitHub`, we can have `nix` manage the
version instead