Fix for spaces in install directory and in env names
Disable the ThreadPool stuff for now

It doesn't handle exceptions that are raised very well, giving "TypeError:
exceptions must derive from BaseException" and I don't have time to debug it.
Update CHANGELOG
add new dependency to setup.py - next release will be 3.5.0
improve error message to include allowed channels
Clearer error for 'conda search' with invalid regex

Closes gh-706

This prints a brief error message saying that the pattern was invalid,
rather than showing the full traceback.
formatting
formatting
IOError is raised on Windows
fix versioneer on Windows
fix code string in versioneer.py for future reference
formatting
add release date
Don't check the constraint with [0, 0] separately

Now that it checks the maximum versions only first, it is fairly rare that
this case will succeed.
Only check for satisfiability when generating the hint

This makes the hint code run much faster, and use less memory (because it
never uses the pseudo-boolean stuff). Fixes #703.
update trove classifier
Print the error in raises()

This is useful for debugging.
Keep track of the packages that were actually not found in the NoPackagesFound error message

Fixes #727.
Work on getting conda to prompt for proxy username and password

It doesn't seem to work for https proxies.
Add missing raise_for_status() in download()