Adds PR template text. (#609)
Adds PR template text. (#609)


googlecartographer/cartographer,wohe/cartographer,cartographer-project/cartographer,wohe/cartographer,googlecartographer/cartographer,larics/cartographer,googlecartographer/cartographer,googlecartographer/cartographer,damonkohler/cartographer,larics/cartographer,cartographer-project/cartographer,damonkohler/cartographer,damonkohler/cartographer,wohe/cartographer,damonkohler/cartographer,cartographer-project/cartographer,cartographer-project/cartographer,larics/cartographer,wohe/cartographer,larics/cartographer