Raise TypeError while doing comparison of complex numbers (issue 2625)
Add tests for issue 2625
Fix test failure in test_zeta_functions.py
Merge branch 'master' into 2625-complex-comparison
A better fix for test failure in test_zeta_functions.py (commit 80fe207)
Fix all test failures, except meijerint.py
An attempt to fix meijerint.py
Merge branch 'master' into 2625-complex-comparison-meijerint

Conflicts:
	sympy/core/tests/test_sets.py
	sympy/integrals/meijerint.py
Revert some modifications from aea052d
Fix test failure in test_geometry.py
Fix test failure in test_wester.py
Raise an exception only if is_real is False
Merge branch 'master' into 2625-complex-comparison
Merge branch 'master' into 2625-complex-comparison
Use t_area.is_nonpositive
Merge branch 'master' into 2625-complex-comparison
Raise an exception in _isright method (refactored to static class method), if t_area.is_nonpositive is None
Merge pull request #2510 from skirpichev/2625-complex-comparison

Fix issue 2625: there is no natural ordering for complex