Bumped version number to 0.8.1
Improved issue #115 by using more specific namespaces first
Merge branch 'master' into devel
Code style fixes
Changed ordering of checks in guessFormat(), to prevent HTML being detected at N-Triples (fixes #206)
Merge branch 'master' into devel
Merge branch 'devel' of github.com:njh/easyrdf into devel

Conflicts:
	lib/EasyRdf/Format.php
	lib/EasyRdf/Namespace.php