first attemp of a AuditLog-ResultSet
Merge remote-tracking branch 'upstream/master'
New helpers in Schema, doc in Resultset, tests
test for rs-load_components
skel for relationship tests
tests for "set_from_related" and "create"related"
added support for more than one primary key
tests for "set_$rel"
docs updated
docs updated
skel for recursive-update tests
more tests for recursive-update
more tests, bugfix in rel-schema
tests and bugfix: unchanged columns get logged if old- and new-value are undef (FIXED)
Merge pull request #8 from lukas-t/master

Introduced ResultSet::Auditlog