Tox setup to test things with py27 & py34 and several versions of ZODB

tox.ini

+# wendelin.core | tox setup
+[tox]
+envlist = py27-{ZODB3,ZODB4}, py34-ZODB4
+# (NOTE ZODB3 does not work on python3)
+
+[testenv]
+deps    =
+    # why tox does not get it from extras_require['test'] ?
+    pytest
+
+    # latest ZODB from 3 series
+    ZODB3:  ZODB3 >=3.10, <3.11dev
+
+    # latest current ZODB _4_
+    ZODB4:  ZODB3 >=3.11
+
+
+commands= {envpython} setup.py test
+# XXX setenv = TMPDIR = ... ?  (so that /tmp is not on tmpfs and we don't run out of memory on bench)
+# + {envpython} setup.py bench  (?)