Annotations required reflection and working with them turned out to be rather cumbersome. The annotations have been replaced with properties for the most part.
BREAKING CHANGE: Patch annotations have been removed. PatcherException is now thrown in various places. PatchBundleLoader is now a map of patches associated by their name. Patches are now instances.
This commit introduces a couple changes besides the refactor. Executing patches can be cancelled, multiple bundles loaded into the same class loader and `Patch.execute` does not have to return anymore.
BREAKING CHANGE: Various public APIs have been changed. The `Version` annotation has been removed. Patches do not return anything anymore and instead throw `PatchException`. Multiple patch bundles can now be loaded in a single ClassLoader to bypass class loader isolation.
