Merge branch 'topic/christian/customizable-package-detection'

* topic/christian/customizable-package-detection:
  Various minor README tweaks.
  Adjust btest.sh to make it easier to work with old Zeeks
  Expand configurability of Zeek package determination for log fields

Merge branch 'topic/christian/fix-json-timestamp'

* topic/christian/fix-json-timestamp:
  JSON Schema: iterate on JSON timestamp format support
  CI: add jq so we don't skip a bunch of tests due to failed requirements

Merge branch 'topic/christian/jsonschema-additional-detail'

* topic/christian/jsonschema-additional-detail:
  In the README, show examples before customization and improve linking
  JSON Schema: expand README
  JSON Schema: put each field's description keyword first.
  JSON Schema: add a test that turns off optional schema features
  JSON Schema: fix omission of one format in the timestamp test
  JSON Schema: add support for example values
  JSON Schema: add optional constraints for some data types
  JSON Schema: add an `items` keyword to specify the type of set/vector members

Merge branch 'topic/christian/fix-record-type-to-vector-deprec'

* topic/christian/fix-record-type-to-vector-deprec:
  Avoid record_type_to_vector in Zeek 8, where it's deprecated

Merge branch 'topic/christian/fix-jq-incompatibility'

* topic/christian/fix-jq-incompatibility:
  Fix a jq incompatibility in the json-ordering test

Merge branch 'topic/christian/jsonschema-zeek-annotations'

* topic/christian/jsonschema-zeek-annotations:
  JSON Schema: expand README to cover x-zeek annotations.
  JSON Schema: test updates to reflext x-zeek annotations
  JSON Schema: add docstring for the property_fill_type() helper.
  JSON Schema: introduce "x-zeek" property annotation to convey Zeek specifics