There are no changes in the ABI. libpulse has received bug fixes,
libpulse-simple and libpulse-mainloop-glib have no changes at all.
# The stable ABI for client applications, for the version info x:y:z
# always will hold y=z
-AC_SUBST(LIBPULSE_VERSION_INFO, [20:0:20])
+AC_SUBST(LIBPULSE_VERSION_INFO, [20:1:20])
# A simplified, synchronous, ABI-stable interface for client
# applications, for the version info x:y:z always will hold y=z