Merge pull request #216 from sprowell/master

General cleanup and version bump.
Merge pull request #217 from sprowell/master

Removed dependencies on manifests.
Merge pull request #218 from sprowell/master

No ranges in ParseWorker
Made BasicAtomComparator faster and riskier.
Eliminated toString calls inside of hashCode.
Eliminated BigInt from otherHashCode.
Sped up hashify
Merge pull request #219 from heiseda/master

Speed ups based on hashing
Revert "Sped up hashify" because it causes memoization cache collisions.

This reverts commit 9495a6b816fd6101acadb06fb0bb899b06e3a87c.
Removed useage of BigInt in memoization that was related to otherHashCode
Added a constant in hashify so single-element collections don't collide with their contents.
Various hashing changes to prevent collisions and some import cleanup.
Merge branch 'hash-fix'
Merge pull request #220 from heiseda/master

Hash code fixes and improvements