Maintenance Release

This is a maintenance release based on updated dependencies.

Documentation has been added to help others in building/compiling sami

@mixin support

This update includes the @mixin support - which is supported by IDEs such as PHPStorm, but still being discussed in phpDocumentor/fig-standards#35

Support for @example / @source added

This is the first release after the original repository was archived by fabpot. It includes the PRs for @source and @example phpdoc tags as well as the updated readme reflecting the possible config options and phar file.