Conda

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* fixed conda installing itself into environments (issue 10)
* fixed non-existing channels being silently ignored (issue 12)
* fixed trailing slash in ~/.condarc file cause crash (issue 13)
* fixed conda list not working when ~/.condarc is missing (issue 14)
* fixed conda install not working for Python 2.6 environment (issue 17)
* added simple first cut implementation of remove command (issue 11)
* pip, build commands: only package up new untracked files
* allow a system-wide <sys.prefix>/.condarc (~/.condarc takes precedence)
* only add pro channel is no condarc file exists (and license is valid)

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* fix conda create not filtering channels correctly
* remove (hidden) --test and --testgui options

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* fix deactivation of packages with same build number
note that conda upgrade did not suffer from this problem, as was using
separate logic

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* fix bug in conda update not installing new dependencies

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* added conda package command
* added conda index command
* added -c, --canonical option to list and search commands
* fixed conda --version on Windows
* add this changelog

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* remove ambiguity from conda update command