Relatively large cleanup. Testscript improved. Usage Improved. Added a mismatchmatrix filter functionality

What's Changed

• Updated the dfit part by @ANGSD in #57
• Update ngs lca.cpp by @ANGSD in #60
• Update main file and split getdamage into seperate file by @ANGSD in #61
• Update test suite by @ANGSD in #62
• Update compressbam og extract_reads by @ANGSD in #63
• Update print and made a bdamage sub reader by @ANGSD in #65

Full Changelog: v0.4.4...v0.5.0