v0.1.1

2020-02-24: Version 0.1.1.0

Thanks to @glanham-jr for building the release of macosx-10.7.
Thanks to @lfkdsk for building the release of macosx-10.15.

• Fix multi-param datatype constructors

• Fix throwing exceptions

• Fix the use of some JS specific features in CodeGen:

  PS codegen uses JS tricks like "a" + ["b", "c"] == "ab,c",
  we change the generated code like throw new Error("a" + ["b", "c"])
  to throw Error("a" + ",".join(["b", "c"])).

  *Further optimizations can be done later.