version 0.2.4

made mdfconverter compatible to PyQt5
introduced mdf3 unsorted read, to be confirmed as no sample file to test it
improved processing time for big number of channels, thanks to mattispasch contribution
implemented hidden and not aligned bytes handling in mdf3
changed from relative path import to absolute path for better robustess against platforms
fixed issue with dataRead import on windows by changing its location to module root
Fixed bug with special character channel (recarray is using python identifer having not allowed characters)