Greaseweazle Tools v0.36

Release Notes:

• Tools now require firmware >= v0.31
• New commands: gw convert, gw rpm
• gw read, gw convert: New option --no-clobber prevents file overwrites
• gw read: Save partial output image file on ctrl-c
• gw read: Option --rate replaced by HFE sub-option 'bitrate'
• gw read: New option --raw forces raw flux output even if --format specified
• Recognise new third-party hardware: "Adafruit Floppy Generic"
• Sanity check TRK0 signal after every head seek
• Rename sega.sf7 format to sega.sf7000
• New --tracks sub-option hswap: Treat side 1 as side 0 and vice versa
• ibm mfm, fm: Fix parsing sectors that extend past end of dump
• All output is now to stderr (consistent, and unbuffered)