Add 32/64-bit reporting to issue template

[gojomo]

It's be useful if the issue template also requested whether the local Python is a 32-bit or 64-bit executable. Adding this line to the "Please provide the output of" code should be enough:

import struct; print(8 * struct.calcsize("P"))

[piskvorky]

Sure. Feel free to edit the template file directly.

[gojomo]

Aha, my search for how to change the template had pointed to a Github project 'Settings' tab that I don't see in my interface, & I'd never noticed it was driven by an in-project file. Added in bc95bcb.

[piskvorky]

Yeah, Github has some new style of doing templates now, that I haven't explored yet. We're still using the "older" way, with ISSUE_TEMPLATE.md.