objective-0.5.2: CHANGELOG.md

0.5.2
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* Added Process
* Added `runSequential`, `sequential` for operational monad

0.5.1
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* Added PushPull functor
* Removed `sequential`

0.5
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* Lift has gone
* Use elevator instead of Lift
* Moved Request to a separate module

0.4
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* Added Request functor along with Lift
* Supported "extensible" objects using open unions
* AccessT is now obsolete