Results 4 issues of Kyungmin Lee

https://github.com/ITensor/ITensor/blob/78eb39a5115d1bb99a782337e7f3fd007e676d98/itensor/itdata/scalar.h#L178 Should this line be something like the following? ``` void inline doTask(Conj, ScalarCplx & d) { d.val = std::conj(d.val); } ```

Bug

Fixes https://github.com/ITensor/ITensor/issues/282

https://github.com/quinnj/JSON3.jl