Bump kiwisolver from 1.1.0 to 1.2.0

Bumps kiwisolver from 1.1.0 to 1.2.0.

Changelog

Sourced from kiwisolver's changelog.

Wrappers 1.2.0 | Solver 1.2.0 | unreleased

• make the the c++ part of the code c++11 compliant PR #55
• use cppy for Python/C bindings PR #55

Commits

• d9d1d77 setup.py: proper python version pinning and cut 1.2.0 release
• 8a7bf3b drop 3.5 and include tests in source release
• e11093a fix requirement version number
• a9abba5 prepare 1.2.0 release
• b04d5d3 update header with proper license file name
• 0846189 docs: attempt to fix doc building
• 2040c9f Merge pull request #77 from ossdev07/master
• 9d650dd Add ARM64 jobs in Travis-CI
• 4858730 Merge pull request #55 from nucleic/cppy
• d475749 travis: run cppy master
• Additional commits viewable in compare view