Distinguishing KEYDOWN and KEYUP

[ghost]

The log file output has no distinction between holding keys and tapping keys. Ex:
Holding super and pressing 123: <LMeta>123
Tapping super and pressing 123: <LMeta>123

This results in a lot of ambiguous results where I'm not sure when a key is no longer being held down.

It would be nice if the logger had output like:
<LMeta_DOWN>123<LMeta_UP>
and
<LShift_DOWN>r<LShift_UP>

Most of the loggers I've looked into don't do this. So, I'm not really sure what to do.