Cut 0.81 release
Allow stemcell versions to be specified as float
Version 0.8.2
Initial deployment patch support
Extract project deployment validation
Applied releases added cf 176
Make template submodule optional + deployment patch validation
Merge branch 'deployment-patch' of https://github.com/swisscom/bosh-workspace into deployment-patch

Conflicts:
	lib/bosh/cli/commands/deployment_patch.rb
	lib/bosh/workspace/deployment_patch.rb
	spec/commands/deployment_patch_spec.rb
	spec/deployment_patch_spec.rb