fix more iteritems issues
handle None when finding max color/image mode
use next() in async module
fix feature info parsing of bytes or strings
fix merging of default config
implement __hash__  for ImageFormat
fix encodings in OGR
fix etag calculation
fixes for python 2 support
fix test for OGR WKT results
fix geometry transformation
fix cgi header parsing
more bytes fixes
handle different dict orders
fix exception reraises
bytes fixes for tempita
add reraises helper
use next()
handle UnsupportedOperation on Seek in make_readable_buf
support for bytes docs in validate_with_dtd/xsd