In the PHPdoc for scan_theme, change the scan type default value note to correspond with the actual one
Allow usage of default arguments with analyze-theme CLI subcommand
Add unit tests for the register_widget() check.
Use regex to reduce false positives in the check for register_widget().

This matches the earlier check for register_sidebar(), but a regex match
might be more robust. It prevents a false positive for functions that
use the 'register_widget' slug in their name, for instance,
'prefix_register_widget_areas'.
s/chlidren/children/
Move renderers to a directory of their own

This should help understand the code structure more easily.
Move scanners to a directory of their own
Fix a typo in a comment
In PHPAnalyzer::add_renderers(), rename $child_path to $child_name as that's what it really is
Merge pull request #198 from bradyvercher/fix-widget-check

Add unit tests and fix some false positives when checking for calls to register_widget()
Merge pull request #209 from ockham/allow-cli-analyze-theme-default-args

 Allow usage of default arguments with analyze-theme CLI subcommand
Merge pull request #210 from ockham/preparatory-fixes

Preparatory fixes