Don't run PR acceptance tests on master or release
Don't run PR acceptance tests on master or release

Almost all our CircleCI jobs are PR acceptance tests that don't need
to be run when we merge to master. It should have already been handled
when we tested the PR.

sgebbie/ponyc,sgebbie/ponyc,dipinhora/ponyc,ponylang/ponyc,cquinn/ponyc,dipinhora/ponyc,ponylang/ponyc,kulibali/ponyc,sgebbie/ponyc,sgebbie/ponyc,kulibali/ponyc,cquinn/ponyc,jemc/ponyc,jemc/ponyc,ponylang/ponyc,sgebbie/ponyc,kulibali/ponyc,cquinn/ponyc,kulibali/ponyc,cquinn/ponyc,jemc/ponyc,dipinhora/ponyc