Misc Updates for release 0.18. (#337)

* Updates for release.

* Update Changelog.

Author: PaulHuwe

CHANGES.rst

@@ -15,6 +15,8 @@
 
 - Added optional dq array. [#328]
 
+- Update required elements for release. [#337]
+
 
 0.17.1 (2023-08-03)
 -------------------

src/rad/resources/schemas/exposure-1.0.0.yaml

@@ -396,7 +396,7 @@ properties:
         origin: TBD
     archive_catalog:
       datatype: nchar(1)
-      destination: [ScienceCommon.exposure_truncated, GuideWindow.exposure_truncated]
+      destination: [ScienceCommon.exposure_truncated]
 propertyOrder: [id, type,
            start_time, mid_time, end_time,
            start_time_mjd, mid_time_mjd, end_time_mjd,

src/rad/resources/schemas/reference_files/dark-1.0.0.yaml

@@ -84,7 +84,7 @@ properties:
       unit:
         tag: tag:astropy.org:astropy/units/unit-1.0.0
         enum: ["DN / s"]
-required: [meta, data, dq]
+required: [meta, data, dq, dark_slope, dark_slope_error]
 flowStyle: block
 propertyOrder: [meta, data, dq, dark_slope, dark_slope_error]
 ...