Merge pull request OpenMathLib#2667 from xianyi/develop Merge develop into 0.3.0 for 0.3.10 release

Version 0.3.9 

Merge pull request OpenMathLib#2398 from xianyi/develop Update from develop in preparation of the 0.3.8 release

Update with 0.3.7 changes 

Merge pull request OpenMathLib#2100 from xianyi/develop Merge develop in preparation of 0.3.6 release

Version 0.3.5 

Update with changes from 0.3.4 

Updates for 0.3.3 

Merge pull request OpenMathLib#1702 from xianyi/develop Merge develop for 0.3.2

Merge pull request OpenMathLib#1657 from martin-frbg/release-0.3.0 Release 0.3.1