Merge branch 'master' into t10_signal
ticket:10 remove redudant _meta in 'if' statement
ticket:10 ModelChangeEntry's tests fixes
ticket:10 ModelChangeEntry fixes
ticket:10 schemamigratio
ticket:10 signal fixes
ticket:10 add ModelChangeEntry test
ticket:10 object_id field fixes
ticket:10 dlete migration
Merge branch 't10_signal'
Merge branch 'master' of github.com:sv0/42-test-assignment

Conflicts:
	test_assignment_project/core/tests.py