Add FOLowerUnits test case
Add comment to FOLowerUnits
Fix FOLowerUnits

Fixed issue outlined in comment of last commit
Add proof draft
Add note on proof
Checkpoint for refactoring FOLowerUnits
Fix FOLowerUnits

Code is now cleaner/more efficient. Should match suggestions in code
review comments on Skeptik-dev (Jul 4/14)
Clean FOLowerUnits
Change theorem proof

Added induction; some notation changes (more to come).
Fix theorem's proof notation
Add first recycle pivots example
Expand research notes
Add recycle conjecture
Fix notation in proof of theorem 3.1
Add research notes/fix notation in 3.1
Fix Contraction

{A(X), A(b) |- B(X)} now contracts correctly
Add Contraction test case
Fix Contraction 

Now does multiple contractions at once
Remove ProcessResolution from FOLowerUnits
Change FOLowerUnits

UnifyingResolutionMRR calls were changed to UnifyingResolution, with 
the additional contractions done later.