release-1c01-1.2.2

This is a release of the Dialog compiler, standard library, and documentation.

What's Changed

• bump versions by @susan-davis in #285
• Fix spurious warnings with (generate $ $) by @dstelzer in #287
• Add (at most once) by @dstelzer in #261
• Only allow closures as object policies, not objects by @dstelzer in #289
• Fix obscure span-inside-closure bug by @dstelzer in #292
• Add DRINK FROM to grammar by @dstelzer in #293
• License incorrectly updated by @dstelzer in #294
• Make (heads $) apply to topic objects by @dstelzer in #295
• Make aamrun binary a last resort instead of a first one by @dstelzer in #297
• Overhaul output control by @dstelzer in #300
• Update to 1c/01 and 1.2.2 by @dstelzer in #301

Full Changelog: release-1b02-1.2.1...release-1c01-1.2.2