Add 33 historical deleted Casks

The set of all deleted Casks from the main repo turned out to be quite small, after removing false positives such as splits, merges, renames, and repo transfers, so I pushed them all in this PR.

This is a very rough cut; the set might still be too inclusive, but that shouldn't matter much given the purpose of this repo.

A quick, imperfect attempt was made to bring older Casks up to DSL 1.0.

Comments were added to each Cask, with a reference to the deletion event in the main repo.