Feature/stable id update
Created by: mira13
Description
Make stable_id updatable with update function of gene and transcript
Use case
This is an old existing bug, claimed to be resolved by other Ensembl teams
Benefits
no bug any more
Possible Drawbacks
no drawbacks
Testing
Unit tests are updated
If so, do the tests pass/fail?
All tests are passed with travis as well
Have you run the entire test suite and no regression was detected?