It was a mess and had to be rewritten. The new version is a bit simpler
by dropping unstable features that I never used anyway.
It still supports a verbose flag that prints every step of the process.
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
