'Cancel' for PromiseKit#3

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dougzilla32 wants to merge 3 commits into

PromiseKit:masterfrom

cprkit:CoreCancel

Commits on Oct 7, 2018

'Cancel' for PromiseKit -- provides the ability to cancel promises and promise chains
dougzilla32
committed
Merge branch 'master' into CoreCancel
dougzilla32
authored

Commits on Oct 16, 2018

'Cancel' for PromiseKit -- remove cancellable wrappers (they are unnecessary)
dougzilla32
committed