Forgot to actually implement runtime add-hook
Add unit tests for Hookable
Follow some pylint's suggestions to clean Hook
Add the capability to hook a function on multiple hooks, and implement @chksum decorator based on that
Fix ext.utils according to Pylint
Test correctness of decorators
Add pre-commit git hook simply for more robust development
Complete Linker
Fix small derps and some additional tests for core.Linker
Basic structure for Tasky
Implement a small memoize decorator, not tested yet.