Change the contract of the KISObserver category. It doesn't raise an exception anymore when the given observable is nil.
Update the documentation of the KISObserver category.
Add the description method to the KISNotification.
Solve issue with the initial options with many keypaths at the same time.
Change the contract of the KISNotification. It returns empty IndexSet instead of nil value for removals, insertions and replacements.
Delete platform targets from the cocoa spec file.
Add an example of an observation with many keypaths at the same time in the README.
Merge branch 'master' of https://github.com/RomainLo/KISObserver