Version bump to 1.13

version bump (google#455)

santactl: don't watch for config changes (google#453)

* santactl: don't watch for config changes

* bump version

santactl: sanitize rule payload (google#450)

* santactl: sanitize rule payload

* version bump

com.google.santa.daemon: reorder cleanup() (google#448)

* com.google.santa.daemon: reorder cleanup()

* version bump

Simplify install scripts (google#447)

* installer to respect EnableSystemExtension

* conform

version bump (google#446)

santad: add prefixes on a background thread (google#444)

* add prefixes on a background thread

* version bump

santad: wait for driver connection before adding prefix filters (goog…

…le#443)

* wait for driver connection before adding prefix filters

* version bump

* fix travis build

santad: fix launch path and args for loading the system extension (go…

…ogle#442)

* missing /

* version bump

* that was close