Clogger 0.1.0 for relaxed Rack compatibility

Clogger is Rack middleware for logging HTTP requests. The log format
is customizable so you can specify exactly which fields to log.

Changes:

This release should help ensure compatibility with a
to-be-released version of Rack::Lint that allows subclasses of
the core String and Hash objects for users of the optional C
extension.

Eric W. (7):
ext: convert non-Hashes #to_hash if possible
ext: ensure all objects we byte_xs are Strings
tests for subclassing
gemspec: disable the license= field for older RubyGems
GNUmakefile: fix grammar FAIL in comment
cleanup packaging and website/rdoc
clogger 0.1.0