added interface, got methods working for TimberPost
turns out methods take about 80x longer than properties, so use properties when possible
apply interface to timber-term
fixed issues for updating meta with TimberTerm and TimberUser interfacing with the core object #272
TimberComment uses interface #272
TimberSite complies with #272
separated timber-menu-item into its own file, added tests to comply with #272
resolved #272 with completion of TimberImage and adding __toString