switch to 0.2.0, remove need for special CLJS macros, add defmathop3 macro, add new operations, update/add tests

using syntax quoted references when building math-ops turned out to be the key to avoiding a special CLJS version
new defmathop3 macro is now used to build maddsub etc. type ops
add new ops: adddiv, subdiv, addmsub, submadd
update doc strings for defmathop*