v2.2.0-rc

What's new in this release?

• [New] Support for themes. See the new feature #98.
• [New] Package manager with the following new commands: new:theme, add:plugin, remove:plugin and update:plugin. Additionaly, new:site command has been updated for scaffolding new sites using themes. See the new feature #96.
• [New] Allow default attributes on "pages" collection. See new feature #93.
• [New] New options for applying avoid_renderizer feature to type of files and files belong to a path (relative to src/content folder). See new feature #91.
• [New] Added a verbosity level param (optional) to the write method of IOInterface.
• [New] Added verbosity and very-verbosity level messages to the ContentManager class.
• [New] Added support for overwriting messages to the output in IOInterface.
• [New] Added support for ask choice questions in IOInterface.
• [New] Added the method getSpress to CommandEnvironmentInterface.
• [New] Updated to using Symfony 3.2 components.
• [Improved] The terms generated by TaxonomyGenerator for each item appears sorted.
• [Fixed] Avoid an error using --force option of new:site command over a
  non-empty directory that contains "hidden" directories and files.
• [Fixed] Fixed a bug related with the "pagination generator" and the draft posts. See bug #101.
• [Fixed] Fixed the askAndHideAnswer method of ConsoleIO class to use the fallback argument.