Reverted decay value to 0.2
Reverted retrieval of authors from new collaborator detector
Normalized DECAY constant now designed to have a close race between JUnit and Spring
Merge branch 'master' of https://github.com/SebastianKG/410-yardwand

Grabbing changes to duplication detector.
Minor changes to tests.
Merge branch 'master' of https://github.com/SebastianKG/410-yardwand

Grabbing code duplication detector update.
Merge branch 'master' of https://github.com/SebastianKG/410-yardwand

Grabbing refactored code.
Changed HashMaps to LinkedHashMaps so that insertion order ie. date added is maintained. Implemented fusion module to work with the versions with specific dates. We throw away data with no associated version.
Merge branch 'master' of https://github.com/SebastianKG/410-yardwand

Merging to push changes to master.