Rename "installer" folder to "scripts" to broaden the scope of it.
Add bash completion script. Fixes #154.
Adding FISH shell completion
Merge pull request #375 from msoucy/completion/fish

 Adding FISH shell completion
Missing format()
Merge pull request #376 from sinkuu/fix_enforce

Missing format() function
Add upgrade() call when building DDOX to get the required dependencies. Fixes #366.