VOP post-processing

***Please note that a much improved Version can be found on Github:***
https://github.com/sOrzada/VOP_Compression

Here we introduce to algorithms for post-processing of VOP sets.

Algorithm 1 reduces the Overestimation for a given set of VOPs.
Especially useful to reduce the overestimation in VOP sets calculated with the compression algorithms by Lee et al. and Orzada et al.

Algorithm 2 tests a given set of VOPs for redundancy. It can be used to reduce the number of VOPs in a dataset produced by Eichfelder and Gebhardt's algorithm.
Especially useful when you have a vendor provided VOP set only.