Ignore any aliases there may be

Loading of conf.d files for the current theme is done after all other initialisation to ensure that everything the files need is loaded.

Update templates

Add PR templates and update install.sha256

Add CodeTriage badge to oh-my-fish/oh-my-fish

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Well, It worked with pastfish, I didn’t bother to check the entire readme.md for more of these.

* lib/git/git_is_touched: Speed up

This used to use `git status --porcelain`, which by necessity needs to
check the entire repo for all kinds of changes, just to figure out if
there are any.

Instead, we now use git commands that can exit early.

In large repos, this can be faster by a factor of 15 or so.

Fixes #624.

* Fix return status

`git diff` also returns 1 if there *is* a diff.

Add RU flag to uk-UA README

Since Fish Shell 3.0 [1], `?` as a glob is deprecated. Fixes #644

  1. https://github.com/fish-shell/fish-shell/releases/tag/3.0.0

Use posix stderr redirection (`2>` instead of `^`)

README: adding Table of contents