[docs]: Documentation for Class<T>, $PropertyType<T, x>, $Exact<T>, and *#2983

Closed

STRML wants to merge 2 commits intofacebook:masterfrom STRML:adv-doc

+147-7

Commits on Dec 8, 2016

[docs]: Documentation for Class<T>, $PropertyType<T, x>, and *
STRML
committed

Commits on Dec 9, 2016

[docs]: Documentation for $Exact<T>
STRML
committed