Fixed unclear output of LinearCombination objects
Fixed OrderBy
Fixed/Added trig rules
Cleanup/comments
Canonicalized members
Simplified and optimized New
Rewrote Real to always use rational implementation
Fixed rogue "i[t]" current
Further optimizations to avoid unnecessary BigInteger arithmetic
Fixed issues when the value is NaN
Fixed Expression.Equals hierarchy
Added VisitPower for LinearTransform
Optimized term lookup with hash code
More tests, improved test framework