bugfixes as usual, new functionality like reconnecting to device with…

…out restarting client.

update CHANGELOG.md

Update default_pwd.dic

CHG: `lf visa2000 demod` - adding the commandcall, allowing for demod…

…s of graphbuffer. (@marshmellow42)

CHG: `lf visa2000 read` - adapting number of samples, from 12000 -> 12500.  (@marshmellow42)

updated

ADD: added the writedumpfile function from "14araw.lua" into utils.lua

ADD: `ufodump.lua` - added the Aztek dump script. Since its an unknown tag hence the name.

CHG: forgot to remove unused function.

CHG: Cleaning up

FIX: the underlaying bug on deviceside code. The SSPCLOCK wasn't rese…

…t to zero sometimes. More specific, TC2 wasn't reset cause all sorts of timing issues for the device side randomly. Like 'hf mf mifare', like iclass, like 'hf mf sim' etc etc.

Merge pull request iceman1001#21 from alexgrin/iceman_master

FIX: erroneous semicolon