Merge pull request #1142 from lambday/develop

 complex unit-tests fixed, JacobiEllipticFunctions updated
CMath::qsort() - Prevent segfault when trying to sort zero-size-vectors.
Merge pull request #1144 from tklein23/master

Fixed: Segfault when sorting empty lists using CMath::qsort() (re-sent to develop)
Changed CList to CDynamicObjectArray in CCombinedDotFeatures (WIP)
Merge pull request #1138 from van51/feature/dotfeats

Changed CList to CDynamicObjectArray in CCombinedDotFeatures
CMath::abs(complex64_t) changed to not to use std::abs()