Merge changes I47c12e13,Iae0d6ef3

* changes:
  Make operation validation return Result<Version>
  Reorganize operation validation version code
tree: e96b673d1baeb8853e54e1812cfb57a0036a4231
  1. nn/
  2. .clang-format
  3. CleanSpec.mk
  4. CPPLINT.cfg
  5. OWNERS
  6. PREUPLOAD.cfg