Add a useful standard ACE shortcut.
Use the meta key symbol where we have it.
Write down all todos for the shortcut overlay data layer.
First piece of data returned.
A key combo must be an array.
More explicit naming.
Simple implementation of detecting a key combo.
Detect some registered shortcut.
#Refactor key combo detection.
Second non-matching key shall hide the overlay.
Detect properly (m)any combination of shortcuts.
#Refactor IFs into while.
Simplify even the while to a more functional style.
Fixed the criss-cross bug.
Rename file.
Move todos into other test files.
Filtering started.
Adhere to test description.
Simplest mapping method.
Filtering is just a subset of the visible detection.