Try enabling more Python 3 testing.

With corresponding fixes.

- Fix unneeded decode in test_shed_upload.
- Update to latest version of gxformat2 for Python 3 fixes (galaxyproject/gxformat2#1).

Author: jmchilton

.travis.yml

@@ -7,6 +7,7 @@ env:
   - TOX_ENV=py27-lint-readme
   - TOX_ENV=py27-lint-docs
   - TOX_ENV=py27-quick
+  - TOX_ENV=py34-quick
   - TOX_ENV=py27
   - TOX_ENV=py34
   - TOX_ENV=py27-lint-docstrings

requirements.txt

@@ -11,7 +11,7 @@ jinja2
 glob2
 virtualenv
 lxml
-gxformat2>=0.1.1
+gxformat2>=0.2.0
 ephemeris>=0.2.0
 galaxy-lib>=17.9.8
 html5lib>=0.9999999,!=0.99999999,!=0.999999999,!=1.0b10,!=1.0b09

tests/test_shed_upload.py

@@ -138,7 +138,7 @@ def test_upload_from_git(self):
                 "git add .",
                 "git commit -m 'initial commit'"
             ]))
-            rev = git.rev(None, "single_tool").decode("UTF-8")
+            rev = git.rev(None, "single_tool")
             upload_command = [
                 "shed_update", "--force_repository_creation",
                 "git+single_tool/.git"