Support macOS 9#18

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toadzky wants to merge 6 commits intoReactorSwift:masterfrom

Commits on May 28, 2018

Commits on Apr 12, 2019

upgrade to swift 5
toadzky
committed

Commits on Jan 18, 2020

Adds support for registering middleware after construction and removing that middleware
toadzky
committed

Commits on Mar 7, 2020

Ignores AppCode project files
toadzky
committed

Commits on Jun 13, 2020

fix something that has been working for a while now, not sure what broke
toadzky
committed