[FEATURE] return the number of null and total
[FIX] fix persistence
[FEATURE] add config option to compute posterior
[FEATURE] posterior probabilities for each peakgroup
[FEATURE] Posterior hypothesis for chromatgrams
[FIX] add faster version for chromatogram
[FIX] use fast version
[LOG] improve logging
[DOC] add docu
[TEST] add tests
Merge pull request #6 from hroest/feature/posterior

Feature/posterior