enable Snow Leopard compatible version
enable latest Snow Leopard compatible version
Fix an issue with `--debug` and `_dump` on Ruby 1.8.7

This fixes an issue where both the `--debug` option and the `brew cask _dump` command would fail on Ruby 1.8.7 when the Cask has an `installer` stanza, e. g. `adobe-air`.
update qq to v 4.0.0
Merge pull request #7893 from claui/fix-brew-cask-dump-ruby18

Fix an issue with `--debug` and `_dump` on Ruby 1.8.7
whitespace nits
Merge pull request #7871 from bashu/evernote-legacy

Evernote and latest Snow Leopard compatible version
Merge pull request #7870 from bashu/daisydisk-legacy

DaisyDisk and Snow Leopard compatible version
daisydisk depends_on :macos
use <= instead of < in evernote OS conditional

marginally clearer to read
Merge pull request #7894 from exherb/qq-v4.0.0

update qq to v 4.0.0
enable Leopard / Snow Leopard compatible versions
snow leopard compatible cleanmymac.rb

enable "classic" version
Snow Leopard compatible sourcetree.rb