More release notes for version 0.6.0.0

Commenting the Identifier class.

Missed an XML attribute.

Bumped version to 0.5.3.0

More debugging code removed

Assignments to pc => goto

Updated readme

Updated README.md in preparation for release of 0.5.0.0

== Version 0.4.5.0 ==

== Version 0.4.4.0 ==

Mostly bugfixes

==Version 0.4.2.0==