Adding more tests for the parser
Removed transformer behaviours from the transformer
Reverted changes as they are indeed used
Moved the file parsing code to a separate parsing class
Minor clean up and moved Serializer before config
DOMPDF made a change that broke the composer.json file
Disable broken tests, will have to fix that later
Output a serialized version of the complete AST during debug
Merging context and cleaning up
Test that class summaries are inherited in the AST

When dealing with classes that extend other classes, and who do not have
their own DocBlocks, we need to verify that the summary is inherited
from the superclass.

In this test we verify that the summary is inherited, even from a
second-degree (level?) parent class.