Setting default includes in config should replace, not merge.
Setting default includes in config should replace, not merge.

See #61

bobthecow/psysh,damiankloip/psysh,bobthecow/psysh,lvht/psysh,damiankloip/psysh,mubassirhayat/psysh,damiankloip/psysh,mubassirhayat/psysh,lvht/psysh,barryvdh/psysh,adetch/psysh,adetch/psysh,barryvdh/psysh