Supporting generic anchors.
Added tests for AnchorContextFactory and AnchorContext
Updated tests to handle generalized anchors.
Merge branch 'gen-anchors' into devel
Supporting general formatting.
Using python's formatting.
Supporting special characters in the general format (\n, \t)
Rewrote curly_term_parser using nestedExpr.
Added some tests for general_format_parser
Using the more elegant 'ungroup' method than extracting the ParsedTerm
by hand.
Added more tests for general_format_parser
Merge branch 'general-format' into devel
Added setup.py requirements.
Updated .gitignore
general_format_parser knows of generalized anchors
Added tostring action.
Merge branch 'tostring' into devel
Updated docs to reflect newly supported formats.
Refactored actions.py into term.py, termactions.py, anchor.py,
actiondir.py
Reduced number of generic selector classes to 1