Correct manpage references
Add comment so that autogen rules have the right comment
Add USBDevice_t structure
Improve docs layout
Correct typos & add software reference in HCL
Imrove shutdown sequence + versioning

Split shutdown and stopping of pending shutdowns so that if there's no shutdown pending and the UPS doesn't accept a shutdown.stop in this situation (i.e. it replies '(NAK') the
shutdown procedure doesn't get halted.
Increase version number of drivers.
Correct typos @shutdown.{return,stayoff}
Fix shutdown.return + versioning

Fix shutdown.return when ondelay = 0 -> split between offdelay < 60 and offdelay > 60.
Increase driver versions.
Fix warning flag + versioning

Some UPSes seem to reply with a \0 just before the end of the warning flag (obtained with QWS), as a consequence of that, the string in C is 1 char shorter than expected (the \r
is not within the string). -> Fix voltronic_warning function.
Increase driver versions.
Add devices to HCL
Add unknown/unused and commented capability entries

Might be useful for future versions.