Update CHANGES.md for 1.1.1 release (#64)
Update CHANGES.md for 1.1.1 release (#64)

Signed-off-by: Kevin Lingerfelt <24140a67a2c322f317f218fe8fdc73da6d462468@buoyant.io>
BuoyantIO/slow_cooker,BuoyantIO/slow_cooker