Zsh: add a missing blank line
Zsh: remove dead dot-zsh alias

I don't have any host-specific overrides in place right now, so this
symlink is currently pointing nowhere.
Remove basically useless copyright header

From years past.
Vim: Turn off SuperTab <CR> mapping

Via a Pro-Tip from @lencioni here:

https://github.com/wincent/wincent/commit/98301544902

This will make `<CR>` insert a `<CR>` during completion, instead of the
SuperTab default behavior which is to cancel completion and preserve the
current text.

Took it for a test drive and feels like an improvement.
Vim: update to Command-T 1.11

This puts us on Command-T 1.11 (well, technically, one commit ahead of
that).

* .vim/bundle/command-t 63d8a76...9a9b37e (7):
  > Git: ignore .ruby-version and vendor/bundle
  > Update docs for 1.11 release
  > Try to detect SCM roots a little less strictly
  > Fix (spurious) test failure on big-endian architectures
  > Fix broken spec
  > doc: update accept selection configuration example
  > Merge branch 'voxik/appstream'