Fix version handling

Merge pull request JuliaInterop#62 from dfdx/class_for_name

class_for_name / Class.forName

up compat requirement

not working on 0.6 yet

Merge pull request JuliaInterop#55 from tanmaykm/tan/misc

implement `convert` for `ArrayList`

JavaCall v0.4.2 [5b3dcec]

JavaCall v0.4.1 [c014e51]

JavaCall v0.4.0 [c22a74c]

JavaCall v0.3.5 [7a5a753]

JavaCall v0.3.4 [50fed5f]