add ProgressBlock#29

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borrrrring wants to merge 7 commits intoNSRare:masterfrom

borrrrring:master

Commits on Oct 12, 2016

fix bug of iOS 10 loop not infinitely
smhjsw
committed

Commits on Mar 6, 2017

Commits on Jul 27, 2020

add ProgressBlock
borrring
committed
add createGIFfromImages
borrring
committed