Results 4 issues of Bence Bécsy

This fixes #44 for me. Not sure if this is python version or OS specific, so maybe someone should check if this works for them.

I'm getting the following error when trying to simulate a free spectrum GWB with the `createGWB` function (specifying `userSpec`): ```TypeError: Cannot cast array data from dtype('float128') to dtype('float64') according to...

Trying to inject a free spectrum GWB with `userSpec` in `createGWB` gives the following error on line 813 of `toasim.py`: ``` --> 813 hcf = 10.0**fspec_ex(N.log10(f)) TypeError: Cannot cast array...

I used `uniform` from a previous release, and it worked fine. Since the latest update that replaced `vectorize` with `jit` my code stopped working. Here is a minimal working example:...