The next (and first) libsigrok release will be called 0.1.0.
The next (and first) libsigrokdecode release will be called 0.1.0.
The next sigrok-cli release will be called 0.3.0 (as we already had a 0.1
and 0.2 release of sigrok-cli; those did not yet use the libs, though).
sigrok-gtk and sigrok-qt didn't have any releases yet, so their version
numbers are set to 0.1.0.
Also, consistently use three numbers/digits for our version numbers.
# libsigrok package version number (NOT the same as shared lib version!).
m4_define([libsigrok_major_version], [0])
-m4_define([libsigrok_minor_version], [2])
+m4_define([libsigrok_minor_version], [1])
m4_define([libsigrok_micro_version], [0])
m4_define([libsigrok_version], [libsigrok_major_version.libsigrok_minor_version.libsigrok_micro_version])