Implemented typeof, instanceof and overloads#128

Merged

Perryvw merged 7 commits intomasterfrom

feature/overloads

Jul 1, 2018

Commits on Jun 27, 2018

Overload spec tests
Perryvw
committed

Commits on Jun 29, 2018

renamed test file
Perryvw
committed

Commits on Jun 30, 2018

Commits on Jul 1, 2018