quick reformat of changes.txt
Another changes.txt weak
Remove get_default_opts() test
Fix S3Filesystem docstring
Merge branch 'fs_refactor' into release-v0.4
Merge branch 'release-v0.4' into remove_deprecated_switches
Add missing test job file
Removed MRJobOptions
First stab at separating command line running from MRJob
Basic separation of mrjob.job into mrjob.run is working
Removed python_bin from all task invocations.

I realize this will break lots of things. Only tested with local runner and
mr_word_freq_count.py.
Merge pull request #473 from irskep/remove_deprecated_switches

Remove deprecated functionality for v0.4
Undo changes to some runners removing python_bin
Revert further runner changes
Cleanup and documentation
Bump boto req version down to 2.2
Flush pipes after writing counters/status
Convert local tests to use local runner instead of inline
Merge branch 'master' of https://github.com/Yelp/mrjob into set_status_encodings
Merge pull request #472 from irskep/set_status_encodings

Allow unicode in counter/status msg names