Add caching to circle (#1057)
Add caching to circle (#1057)

* Make circle CI cache the java toolchain tests

* Fix cache key

* Update toolchain caching

* Restore cache

Co-authored-by: jpoole <7993b18316ec5a1a86110482ff02cd258ef31131@thoughtmachine.net>
thought-machine/please,thought-machine/please,thought-machine/please,thought-machine/please,thought-machine/please,thought-machine/please