Fail when accessing registry with invalid key
Indent logging output on nested tasks
Improve CLI usage:

* Rewrite arguments parsing with OptionParser;
* Allow processing of multiple recipes.
Bump version
Implement `file_match' condition keyword
Fix coding standards
Refactor specs
Refactor Remote#execute
Implement `template' task keyword
Bump version
Implement `composed_macro' recipe keyword
Bump version
Simplify Actions::Mkdir#apply
Bump minor version
Support `mkdir' status attributes
Support `file_write' status attributes
Remove shared action specs on attr_reader
Implement Action post-initialize hook
Refactor actions with Action#setup
Fix incorrect method names in actions specs