1.0.45 no longer exists

[stephenjohnson]

Found this which seems to describe what happened to 1.045

Developer chat

@sgugger has just released fastai-1.0.46, list of changes. Also there was a bit of a mess up with 1.0.44 vs 1.0.45, which are really the same release. So I removed 1.0.45 from pypi/conda and there is 1.0.44 instead for those who want it. But, of course, 1.0.46 is out.