Optlang: Better gen_split lemma
Optlang: Base predicates for label uniqueness
Optlang: Prove agreement of labels generated
Optlang: Start proving label uniqueness preservation property
Optlang: Simplify label uniqueness properties with keys_agree
Optlang: Some work on the label uniqueness preservation theorem
Optlang: Change approach to label uniqueness slightly
Optlang: Reformulate label properties again (stronger)
Optlang: Some new/improved tactics
Optlang: Some work on a bound preservation property

(needs stronger condition)
Optlang: Strengthen conditions for bound preservation
Optlang: Use injectivity instead of disjointness for labels.
Optlang: Function call case for bound preservation
Optlang: Start work on LetFun case of label preservation
Optlang: Finish proof of bound preservation
Optlang: Start rechecking nested_exp stuff after changes
Optlang: Re-check proofs
Optlang: Let's attempt something truly crazy
Optlang: Change up the nested_run proof a bit
Optlang: Trim down the nested_ properties for nested_run