feat!: version 4.0.0 rewrite (#383)

fix(lsp): force-extend capabilities with detected plugin capabilities

chore: add compatibility layers for neovim API deprecated in nightly

revert: don't run `ftplugin` more than once on the same buffer

fix(vimdoc): missing documentation in generated help file

perf: don't run `ftplugin` more than once on the same buffer

docs(changelog): update

fix(hoogle): don't escape URLs when opening in browser

fix(lsp): prevent `:HlsRestart` from retrying indefinitely (#326)

chore: update flake.lock (#321)

Automated changes by the
[update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock)
GitHub Action.

```
Flake lock file updates:

• Updated input 'neodev-nvim':
    'github:folke/neodev.nvim/7cb4f7f29c6bf6f1d21a37f6dd6d12ba64266b09' (2023-12-30)
  → 'github:folke/neodev.nvim/be8d4d4cab6c13c6a572269c9d6a63774baba9a0' (2024-01-05)
• Updated input 'neorocks':
    'github:nvim-neorocks/neorocks/5c262f0ed5e66c7afa68747ed74a78d4f2da8307' (2023-12-30)
  → 'github:nvim-neorocks/neorocks/57ae32b6d87c780efb0814999e085ed04dc5419e' (2024-01-06)
• Updated input 'neorocks/neovim-nightly':
    'github:neovim/neovim/dd00b6b442a6d3a8a4758b0ee10ac93d07e7db72?dir=contrib' (2023-12-30)
  → 'github:neovim/neovim/28c183b38cdc00436d95af80ee8e34e4793ee38d?dir=contrib' (2024-01-05)
• Updated input 'neorocks/nixpkgs':
    'github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870' (2023-12-25)
  → 'github:nixos/nixpkgs/63143ac2c9186be6d9da6035fa22620018c85932' (2024-01-02)
• Updated input 'neorocks/pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/7f35ec30d16b38fe0eed8005933f418d1a4693ee' (2023-12-24)
  → 'github:cachix/pre-commit-hooks.nix/9d3d7e18c6bc4473d7520200d4ddab12f8402d38' (2023-12-30)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870' (2023-12-25)
  → 'github:nixos/nixpkgs/63143ac2c9186be6d9da6035fa22620018c85932' (2024-01-02)
• Updated input 'telescope-nvim':
    'github:nvim-telescope/telescope.nvim/3466159b0fcc1876483f6f53587562628664d850' (2023-12-29)
  → 'github:nvim-telescope/telescope.nvim/87e92ea31b2b61d45ad044cf7b2d9b66dad2a618' (2024-01-04)
```

### Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened
by a GitHub Action.

To run GitHub Actions workflows on this PR, run:

```sh
git branch -D update_flake_lock_action
git fetch origin
git checkout update_flake_lock_action
git commit --amend --no-edit
git push origin update_flake_lock_action --force
```

---------

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