read_cleaned

switched to more permissive mode.
fix for potential non-ascii chars in bytestream.

read_ascii

info streams can now be fetched as "cleaned" ascii strings.
rvt_info is now purely regex based.
added version handling for rvt > 2018.

read_tm_data

now reads also the transmission data and gives an overview of linked models.

rvt_exe_info

0.3.0

flit.ini require pefile - add