Log Message:
py-kiwisolver: updated to 1.3.1

Wrappers 1.3.1 | Solver 1.3.1 | 11/01/2020

allow to avoid linking against VC2014_1 on windows
do not mark move constructor / assignment operator of expression as noexcept. \ 
This is to circumvent a suspected bug in the GCC compiler in the manylinux1 \ 
image.

Wrappers 1.3.0 | Solver 1.3.0 | 10/21/2020

add c++ benchmarks and run them on CIs
modernize the c++ code by using more c++11 features
introduce move semantic in some c++ constructors to improve performances
add support for Python 3.9

Wrappers 1.2.0 | Solver 1.2.0 | 03/26/2020

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