This change is inspired by the way that the git zsh completions work by foisting
the responsibility for sub commands onto the command themselves.
It is paired with another change that takes the oh-my-zsh brew cask plugin and
makes it into a first class completion rather than it overriding this.
This change requires fixes in brew, oh-my-zsh and the zsh-completions, and will
likely cause the brew cask completions to break until these have been fully
accepted into each project.
* move shell completion scripts to where can be auto picked up
Let's use switching new remote as opportunity to put shell completion
scripts to where they should be and avoid git conflict during the process.
* add Library/Formula and Library/Aliases symlinks
Formulae and Aliases has been relocated to homebrew/core tap.
The symlinks are pointed to new location to keep backward compatibility.
* remove formula_renames and tap_migrations
They have been replaced by the json files in the core tap.
* update: set new remote
* bump Homebrew version to 0.9.9
