2019 July release

[aewallin]

This issue is to discuss the work needed for a new release in July 2019.

• build is currently broken - is this a real or a travis issue?
• we have 3 open pull-requests by @vespakoen - do we wait&merge or skip these?
• the cmake build system has grown complex - do we change this now or later?
• cmake minimum version bumped to 3.14. use the kitware PPA to get latest cmake if needed.

any other issues before a release?

[looooo]

For the conda-forge package everything should be fine (I will test again once the master is ready for the release). The only thing needed for the conda-forge package is a release.

[looooo]

I uploaded a package from current master to anaconda.org (linux and osx). If someone wants to give it a try:

conda install opencamlib -c freecad/label/dev

[aewallin]

2019.07 now tagged.

I may or may not have time/energy to look at a PPA for binary distribution.
I really think the cmake build with all the bindings needs to be simplified a lot as the next step.