this brings issues with git tarballs and older devpi-client releases to light, before we would let the setup stay at version 0.0, now there is a ValueError
- properly raise errors on write_to misuse (thanks Te-jé Rodgers)
1.5.5
- Fix bug on Python 2 on Windows when environment has unicode fields.
1.5.4
- Fix bug on Python 2 when version is loaded from existing metadata.
1.5.3
- 28: Fix decoding error when PKG-INFO contains non-ASCII.