fixed notice when saving an object with a reset relation that was already empty. closes #255
bumped the docblock version to 1.7
added the option to create EAV entries by just assigning a value to a property
extended unset() support to EAV attributes
fixed unsetting an EAV attribute didn't delete it from the EAV table
Fixes soft delete filtering not being applied when using query object. Closes #256
Stops temporal models from re-saving relations when not needed. Closes #258
Updates temporal comments to have a space between comment indicator and first letter
Some phpdocs improvements in Model and Relation classes
Fixed notice on get_diff(): new_pk not found
Merge pull request #262 from SCIF/1.7/develop

Fixed notice and phpdoc improvements
first version of the new nestedsets ORM model

not documented yet, and full testing still underway!
added roots() method; added new root verification; added relations on get/get_one
throw an exception in path() if no title field is configured
better tree selection; removed debug code
removed set_param(), renamed get_param() to get_config()
removed related() kludge; added get_query() so you can chain query methods
changed get_config() to tree_config(), and changed it to static
delete() now removes all child nodes too
revised deletion. delete() only deletes the node, delete_tree() the node including children

this is more consistent with the default ORM model behavior