Features added in 3.5.0-rc2

<exec play_pcap_audio="..."/> and friends:
- If the argument is not an absolute path, the pcap is searched next to the scenario, before falling back to checking the current working directory.
- The argument may be enclosed in brackets, in which case it is interpreted as a keyword value; set through the -key command line option. Example: <exec play_pcap_audio="[file1]"/> with option -key file1 /path/to/pcap.
Various...

Bugs fixed in 3.5.0-rc2