stick with snake_case for new code

That is, until I decide to go back to sHungarianNotation. The expected type should be obvious from the name.
Wait on ChatAddon not ChatLog
Add more forms
Fix localization
Wrap timerHAL calls in Lockdown:StartHAL and Lockdown:StopHAL to respect auto_target state
Comment cleanup
Remove markers_by_type
Switch to addon-local player upvalue
Rewrite most of TimerHandler_HAL
Clear target on target death while locked
Fix two globals