New settings in MegaDrum.

New firmware version which introduces a new setting called MinScan -
Minimum Scan time. It sets minimum scan time to sample input signals
for each input. In the menu it is shown/measured in 1/10th of
millisecond. It can be changed between 1 and 100 which correspond to
0.1ms and 10ms respectively. This version also has substantially
modified algorithm for sampling input signals. In short it does a
kind of "caching" for choosing inputs to sample and trigger.