Changed files permissions to be the same
Not 100% sure about this change, feel free to close at anytime.

this correct, all files *should* be 644, actually we could use a code check for this to avoid accidently setting it. > this correct, all files _should_ be 644, actually we could use a code check for this to avoid accidently setting it.

@jreback All files? including ```setup.py```, ```test.sh```, ```release_stats.sh``` etc..?

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Writing a code check for this is simple, have exclusions might be tricker