Rework namespaces based on agreement with other similar projects.
Fix namespaces in DrupalContentTypeRegistry.
DrupalContentTypeRegistry should extend Codeception\Module.
Use statics to persist storage of data loaded from storage interface.
Directory structure now matches namespacing. Updated composer.json psr-4 autoloading.
Temporarily disable static members to see if codeception will fix itself.
Trying to move statics into storage class rather than the module itself.
Added use clause for ContentTypeRegistryYamlStorage.
Parse yaml into static members during constructor.
Move implementation of get methods into storage class.
Only load stuff into static properties in the constructor if we haven't done so already.
Fixed erroneous dollar symbol.
Put docs into README.md.
Added isValidContentType().