Added tests of user messages in assertions
Merge remote-tracking branch 'origin/master' into usermessage-least-most

Conflicts:
	tests/WellBehavedPythonTests/MethodSpyExpectationsTests.py

Tests for at most as well as at least added, after resolving merge conflict
Merge pull request #83 from iain-peddie/usermessage-least-most

Added tests of user messages in assertions