net/savvycan: Update to V208

Changes since 1.0.245:

• The data grid control now supports CAN-FD messages with up to 64 bytes.
• Improved visuals for data grid when DBC signal names are displayed.
• Fixed DBC related bugs
• Added support for CAN-FD DBC files
• It is now possible to set the number of data bytes to display per line in the main window (useful for 64 byte payloads)
• Fixes for display of OpenGL accelerated views when using MacOS
• The DBC signal editor now supports undo (CTRL-Z)
• Frame Info Window now has a bit change "heat map" which can be used to see which bits in a message change frequently.
• Frame Info Window now has a separate graph for each byte in the message (double click to expand one or shrink back)
• Playback window can now be set to only start sending when other traffic starts on the bus.
• Added a new window that allows two buses to forward to each other with filtering.

Reported by: portscout