chg: 'trace load' closing filehandles..
chg: 'trace save' all from @pwpivi PR in offical pm3 repo https://github.com/Proxmark/proxmark3/pull/577 Adapted for bigger filesizes and offline/online detection. Currently a bug somewhere....
'trace list' there will also the load / save of trace buffer come. For backwardfunctionality the old commands still works.