Just setting neovim as the `MANPAGER` practically results in a pipe.
The problem with this is that `man` puts hard line breaks into the text
depending on the current window width. When the width changes afterwards
the input naturally doesn't change.
When using neovim's `Man` function this is resolved.
The changes are only shown in the editor and do not land in the final
commit message.
For that setting the git-commit-last-msg function and the commit-msg
hook had to be updated.
The function is now a standalone function instead of anonymous and
uses every line until the first comment in COMMIT_EDITMSG discarding the
new information too.
The hook breaks now when checking line lengths when the changes start
since for some weird reason they are passed together with the rest of
the message instead of being deleted like the comments.
Move every file from plugins into zshrc.d as well as all bigger blobs in
the zshrc into their own files there.
Some stuff is still in there that I am not all too sure where it
belongs. TODO: Move.
Because all external plugins are now sourced over a symlink I had to
create a fork of fzf-tab for now that supports that.
See: https://github.com/Aloxaf/fzf-tab/pull/153
