v2019.07.24-alpha

New

• #20, #364 detect unused :refer vars

• #354 don't emit warning when deprecated function calls itself

• #355 upgrade to GraalVM 19.1.1

• #357 fix documentation on cljdoc

• #169 warn about duplicate required namespaces

• #342 better resolving of vars when using :refer :all

• #342 warn about using :refer :all 😜

• #366 don't warn about type hint symbols that cannot be resolved, CLJS doesn't care about these