LIFO order execution

This release executed hooks in the right order, which is LIFO. The last added hook is executed first, then the second last, and so on.

Exec now uses FIFO order

Exec now uses FIFO order, although this is not yet reflected in the manual.

API updated to transmit optional arguments as one array

The procedures must now take one array as argument, which contains all the arguments that were passed to hooks.Exec.

Removed WithHookSuspended

Cleaned up code, removed WithHookSuspended, added tests and checked for concurrency bugs.

Hooks with suspension option

This release allows to call a function using WithHookSuspended to ensure that the hook is not called within the function call.

Internal pre-release

First release for internal use.