Bump to version 4.0-rc2.
Bump to version 4.0-rc2.

pebble/pebble-tool,pebble/pebble-tool,gregoiresage/pebble-tool,pebble/pebble-tool,gregoiresage/pebble-tool,pebble/pebble-tool,gregoiresage/pebble-tool,gregoiresage/pebble-tool