Merge pull request #87 from eile/master

Changes needed for deprecation warnings in Equalizer and RTNeuron
Updated .gitexternals
Compilation fixes for non const size arrays.
Merge pull request #88 from hernando/master

Updated .gitexternals
Merge pull request #89 from eile/master

Remove obsolete compiler version check
Minor cleanups
Merge pull request #90 from tribal-tec/master

Minor cleanups
Merge branch 'master' of https://github.com/Eyescale/Lunchbox