Version control support

code-forensics currently supports only git and subversion. Unfortunately subversion cannot produce the detail of information in its log output that is required by Code Maat and in turn code-forensics to perform all the analyses. Below is a list of what can be expected to (or not to) work depending on the VCS type.

Code Maat analyses	git	subversion
revisions	✅	✅
soc	✅	✅
coupling	✅	✅
authors	✅	✅
main-dev	✅	🚫
entity-effort	✅	✅
entity-ownership	✅	🚫
communication	✅	✅
absolute-churn	✅	🚫
entity-churn	✅	🚫

code-forensic analyses	git	subversion
hotspot	✅	✅
commit message	✅	✅
sloc trend	✅	✅
complexity trend	✅	✅
sum of coupling	✅	✅
temporal coupling	✅	✅ churn metrics will not be available
developer coupling	✅	✅ code ownership report will not be available
developer effort	✅	✅
knowledge map	✅	🚫
system evolution	✅	✅ churn diagram will not be available