1.3
Show a nice error if the configured description-file is missing
Start adding tests
Stricter check on exception type, losser on errmsg
reverted samples_dir fixture
Update tests of help output
Add another test case for Metadata.supports_py2
Simplify error message when dev-requires conflicts
Merge branch 'pr229'
Add a test for installfrom module
Fix generating setup.py with extras & environment markers
Validate project URLs
Add failing test for identifying VCS in parent of CWD