v2.0_beta_2

Bugfix release

Changes:

• Fixes issues with matching points at the edge of the matching region
• Switch to own custom matching algorithm because of the bad performance of PCL estimate correspondence method on the point clouds prodcued by cell colony distributions
• Makes maximum matching distance configurable via commandline settings
• Fixes wrong matching results being used for the eventual output
• Adds optimum matching transformation to the output of the program