md5-hash should not include timezone-aware datetime

(this will makes all existing cache entries invalid)
fix rst and md extension recognition name
reST extensions can now register roles
exclude unsed .xml files from theme files, appendum to #82
acrylamid view -v logs status messages
read/write BytesIO using binary mode in mkfile
remove mode flag from mkfile
little clean up
remove tasks/clean.py, no longer useful with asset support
remove specs/clean.t
asset conversion should not fail during compilation

results in stale cache objects ...
fix markdown's native metastyle
`acrylamid new' uses reST or Markdown when native ...

metastyle is enabled and CONTENT_EXTENSION is either ('.md', '.mkdown')
or '.rst'. Otherwise YAML is used as template.
yet another test rewrite (using attest)
fix broken, but somehow working unittests
PY3 compatibility
forgot about travis
fix 'acrylamid new' for PY3
travis again
circumvent PyCapsule instance check