We don't actually support Numpy v1.4

[dmcdougall]

See #1839 (comment).

Version 1.2 of matplotlib includes this line which imports a header file from numpy that lives in numpy/npy_3kcompat.h. Well it turns out this file doesn't exist in version 1.4 of numpy, which we officially support.

This file does exist (note no 404 error) in version 1.5, though.

This does raise an interesting point: literally nobody is using numpy version 1.4, otherwise we would have received a bunch of complaints about build errors.

Time to purge the conditionals checking for numpy version 1.4.

[dmcdougall]

Related: #2092

[tacaswell]

@dmcdougall Can you put any time into this in the near future?

[tacaswell]

Closing this as the min version in __init__.py is 1.5 and as near as I can tell there are only three other numpy version conditionals in tho code, one checking >1.6, one checking >1.2 (PR to remove that one coming shortly), and in the install scripts (which extracts the min version from __init__.py.