Bump to 1.0.31

Merge pull request #35 from Threadless/iphone-17

Iphone 17

Merge pull request #34 from Threadless/iphone-16

Add iphone 16 cases and bump version

Merge pull request #33 from Threadless/spoke-py3

Update python-spoke for Python 3.6

Merge pull request #32 from Threadless/iphone-15

Add iphone 15 cases and bump version

Merge pull request #30 from Threadless/mouse-pad-desk-mat

Mouse Pad / Desk Mat skus and bump version

Merge pull request #29 from Threadless/iphone14

Add iPhone 14 case skus and bump version

Merge pull request #27 from Threadless/puzzles

Add skus for puzzles and bump version

Merge pull request #25 from Threadless/iphone-13

Add iphone 13 cases and bump version

Merge pull request #22 from Threadless/iphone-12

Add iphone 12 cases and bump version