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Merge remote-tracking branch 'tanner/quotation'

Conflicts:
	levels/add.rb
	levels/blame.rb
	levels/branch.rb
	levels/branch_at.rb
	levels/checkout.rb
	levels/checkout_tag.rb
	levels/checkout_tag_over_branch.rb
	levels/cherry-pick.rb
	levels/clone_to_folder.rb
	levels/ignore.rb
	levels/init.rb
	levels/merge.rb
	levels/push.rb
	levels/remote_add.rb
	levels/squash.rb