Add --no-rehash to the pyenv init command, which was removed in [#4492].

The rehash was likely disabled because it can affect shell startup times.
It should only be necessary when installing or removing Python versions.

See [pyenv/pyenv#784] and [sorin-ionescu/prezto#1603] for more detail.

[#4492]: https://github.com/ohmyzsh/ohmyzsh/pull/4492
[pyenv/pyenv#784]: https://github.com/pyenv/pyenv/issues/784
[sorin-ionescu/prezto#1603]: https://github.com/sorin-ionescu/prezto/pull/1603

Fixes #9237

Co-authored-by: Marc Cornellà <marc.cornella@live.com>

Fixes #9153

Fixes #9212

Fixes #8743

Closes #9223

My system doesn't have `perl` in $PATH, so using this theme clutters the
shell output quite a bit.

Turns out, the same thing can be accomplished in pure zsh (with
extendedglob).

Co-Authored-By: Marc Cornellà <marc.cornella@live.com>

Fixes #9207

Co-authored-by: Marc Cornellà <marc.cornella@live.com>

Note: `upgrade_oh_my_zsh` is deprecated. Use `omz update` instead.

Co-authored-by: Marc Cornellà <marc.cornella@live.com>

Enough users have complained about the bug label not being applied instead. If there is no label applied
this won't be complained about so often.

It conflicts with normal Backspace behavior. Fixes #9155

For now, it only adds a link to the Discord server.

https://github.com/mfaerevaag/wd/commit/3d20d15d58b9349f872a1abab639aae02374f64c

Fixes #9002

Co-authored-by: Marc Cornellà <marc.cornella@live.com>

Fixes #9050

Fixes #7609
Closes #8191

Co-authored-by: Michal Grňo <m93a.cz@gmail.com>

Fixes #8468

This solves the problem where the used pyenv is actually the one in a
Windows folder, instead of in WSL.

Fixes #9034

Fixes #8022

Closes #8342