PyPy3 support (#2146)

* Error out eval_file

* Enable dynamic attribute support for Pypy >= 6

* Add a test for dynamic attribute support

* Skip test for eval_file on pypy

* Workaround for __qualname__ on PyPy3

* Add a PyPy3.6 7.3.0 build

* Only disable in PyPy3

* Fix travis testing

* No numpy and scipy for pypy

* Enable test on pypy2

* Fix logic in eval_file

* Skip a few tests due to bugs in PyPy

* scipy wheels are broken. make pypy2 a failrue

Co-authored-by: Andreas Kloeckner <inform@tiker.net>
diff --git a/tests/test_multiple_inheritance.py b/tests/test_multiple_inheritance.py
index 475dd3b..7a6e4a0 100644
--- a/tests/test_multiple_inheritance.py
+++ b/tests/test_multiple_inheritance.py
@@ -10,6 +10,7 @@
     assert mt.bar() == 4
 
 
+@pytest.bug_in_pypy
 def test_multiple_inheritance_mix1():
     class Base1:
         def __init__(self, i):
@@ -49,6 +50,7 @@
     assert mt.bar() == 4
 
 
+@pytest.bug_in_pypy
 def test_multiple_inheritance_python():
 
     class MI1(m.Base1, m.Base2):
@@ -253,7 +255,7 @@
         assert d.static_value == 0
 
 
-@pytest.unsupported_on_pypy
+@pytest.unsupported_on_pypy_lt_6
 def test_mi_dynamic_attributes():
     """Mixing bases with and without dynamic attribute support"""