Merge dev_master into master for 0.4.3 release

[hugobuddel]

• add pinhole mask
• bugfixes:
  • numpy.int -> int
  • mamajek fixes
  • data files added to package

[hugobuddel]

I'm creating a release to fix some existing bugs. I'm assuming that the pinhole mask is okay enough, even though we did not discuss them.