Adds recorders supporting terms-based states.
Adds recorders supporting terms-based states.

``TermsStateRecorder`` and the more verbose
``DetailedTermsStateRecorder`` are the new recorders intended for use in
recording ``TermsBasedOverallState`` instances.

git-svn-id: 6391b798f55e3e4f5184bc6d113ebedc82009d5e@3722 1fbec0df-f6b4-4bca-857c-de90862b47bd

gotgenes/BiologicalProcessNetworks