Version 4.1.13

2020-05-26 David Freese <w1hkj@bellsouth.net>

a09931a2e: doxygen
1caa2a467: wefax
c5060a315: cw prosign
5116d99bd: fedora 64 build
785e295ad: Debug Sources
2f4bad6e9: Analysis mode
a4845d914: README update
2e3d22390: Code cleanup
4bdb42cc8: fsq sounder
30af9e2d8: rx_extract
62cf2acff: Default event log level