Make binary rel pointers to src/tgt models non-derived
Regen kleisli model rel
subrel: Fix all points where binary rel src/tgt models are used
subrel: Fix bugs introduced with non-derived binary rel src/tgt models
subrel: Allow non-overriding binary rels
subrel: Fix npes in labels of non-overriding binary rels
subrel: Refactor diagram libraries

 * Move into core mmint because it's needed by overriding functions
 * Rename accordingly, there's not much specific to the gmf diagrams
anyway, it's more generic ui
subrel: Start to include additional behavior into model endpoint api

 * Warning, broken!
 * Move getReference into createSubtypeAndReference
 * Add some todos for future work
subrel: Continue to include additional behavior into model endpoint api

 * Done with all getReference() calls
subrel: Include additional behavior into model endpoint api (3)

 * Remove useless isBinary param from
createInstanceAndEndpointsAndReferences() api
subrel: Include additional behavior into model endpoint api (4)

 * Prevent more than 2 model endpoints to be added to a binary rel
subrel: Include additional behavior into model endpoint api (5)

 * Prevent invalid overriding with a binary rel type
subrel: Include additional behavior into model endpoint api (6)

 * Add a bit of this additional behavior as api to binary model rel
 * Use all things introduced for binary model rel type creation
subrel: Include additional behavior into model endpoint api (7)

 * Handling of binary model rel types is now feature complete
subrel: Include additional behavior into model endpoint api (8)

 * Remove unnedeed argument from replace functions
subrel: Include additional behavior into model endpoint api (9)

 * Convert model instances
 * Delete leftover flat models for models14
subrel: Include additional behavior into model endpoint api (10)

 * Add same capability for heavy types
 * Fix test
subrel: Include additional behavior into model endpoint api (11)

 * Final fix to kleisli model rel type transformation, tests are green
Merge branch 'subrel'