Dallas Marlow

Results 3 issues of Dallas Marlow

adding an attribute to the default dimension causes the same attribute to be purged from all other dimensions. ``` ruby # set 3 attributes each in a different dimension 3.times...

bug

This change addresses a reported issue where a FlatBufferBuilder could be finished with a WIPOffset created by a different builder. Calling builder1.finish(offset_from_builder2) would compile but result in a runtime panic...

rust