maint: snapshots from `maint' are still development snapshots The maintenance-oriented development line in the `maint' branch, while being usually pretty stable and 99% backward-compatible, is not always right off production-quality; but until now, the Automake package version declared in configure.ac hid this fact, since it appeared to be the version of a stable release (e.g., 11.1). Fix this. * configure.ac (AC_INIT): Bump version to "1.11.0a"