beep-1.4.9 release

beep-1.4.8 release

beep-1.4.7 release

beep-1.4.6 release

beep-1.4.4 release

beep-1.4.3

Stop compiling with `-fcf-protection` in `CFLAGS_gcc` if the platform
does not support it (such as the Raspberry Pi ARMs).

Call it 1.4.2

Call it beep-1.4.1

README.md: How spkr-beep came about