Add all the things
Do not close the tab that is active
No idea what changed
Do not close tabs you have never visited
Start accessed count at 0
Do not remove pages more than once
Make background page persistent
Increase version
Do not mark a tab active immediately

Wait until the tab has been open for 2.5 seconds.  This is for cases
when you are quickly switching between tabs with command + shift + [
and that should not trigger the tabs as active
Only do one tab filter when tab is added
Make sure that extension works the first time

Loop through all existing tabs on startup to make sure they are
all registered.
Increase to version 0.1.5
Make sure extension works even if max is not defined
Rename extension from Tab Destroyer to xTab
Increase version to 0.1.6
Update name in popup
Add gitignore