0.37.0.rc.1

Enhancements

• Only re-write lockfiles if they are changed, in an attempt to avoid exposing
  Psych serialization changes across Ruby versions.
  [https://github.com/segiddins]

Bug Fixes

• On case-insensitive HFS+ file systems, try to make queries for specs in
  spec repos to be case-preserved.
  Samuel Giddins
  CocoaPods#2910
  CocoaPods#3024