Releasing 0.6.1.

Reverting b24ae781a6738d44c2b11888cd71a982aaf7c03e

That commit removed the capitalization, preventing it from being
uploaded to pypi.
Merge branch 'release-0.6.1'
config module refactor
fixed two bugs unknowingly introduced into cinema2k/4k testing
Merge branch 'issue265' into devel
Merge branch 'devel' into issue248
box_id and longname are class attributes now instead of instance attributes

Some simplification of the individual box constructors, and a palette box
error message became a bit more clear because of this.
Merge branch 'issue248' into devel
pinpointed test_main_header as culprit for 3 unexplained failures
TestParsing tearDown was not being done correctly

By just passing, the correct test state was not being restored.
Merge branch 'issue266' into devel
housecleaning for 0.7.0 release
skip one test for openjpeg versions < 1.5
clarification of wording
add testing mention of CentOS
skipping some tests on versions 1.3 and 1.4
minor doc mods
more doc updates
housecleaning for 0.7.0 release

Add testing mention of CentOS, windows.
Skipping some tests on versions 1.3 and 1.4
Minor doc mods.
For whatever stupid reason, np.log2(x) cannot be relied upon to be an
integer when x is a power of 2 ON WIN32!!!  All hail win32!
Better error message if array-style slice other than [:]
release 0.7.0