brew upgrade macvim

### Fix command-t after upgrade
```sh
brew upgrade macvim
cd ~/.vim/plugged/command-t/ruby/command-t/ext/command-t
/usr/local/opt/ruby/bin/ruby extconf.rb
make
```

----

#### Install a specific version (misc)
```sh
brew bump-formula-pr macvim --version=8.1-159 --url=https://github.com/macvim-dev/macvim/archive/snapshot-159.tar.gz

brew install macvim --build-from-source --HEAD
```