Merge branch 'stable-2.12'

* stable-2.12:
  Bump javamelody to 1.58
  Use bucklets-provided constant to refer to Plugin API

Change-Id: I26d4aafacbe3bec3c1133350106700df2d497a76
tree: 9415f47987cc0ae80fca5878abb89fa304a09605
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. BUCK
  6. LICENSE