Merge pull request slagyr#155 from reup-distribution/bugs/throwable-type

Correctly check throwable type

merged pull request slagyr#129

fixes files included in jar

updates README. Adds errors handling for nils in js specs

ci task works

CLJS upgrade and exception fixing

adds special matchers for stubbed :with checks

preparing for 2.9.0 release

allows specific spec paths in lein task

upgrade cljsbiuld 0.3.4