basic_ads 1.3.0

Schedule fields are now date-only and existing data is migrated.

Behavior changes
- field_ad_start_date and field_ad_end_date use datetime_type: date.
  The form widget renders Month/Day/Year dropdowns; no Hour/Minute/AM-PM.
  Stored values are 'YYYY-MM-DD' strings.
- View query, cron, and the block's eligibility check now compare against
  a date-only `now`, giving "valid all day on the end_date" semantics.

Update hooks
- 8004 migrates legacy string-typed schedule field storage to datetime
  via direct config-storage editing. No-op on fresh installs.
- 8005 flips datetime_type from datetime to date, truncates stored
  values to their date prefix (DESTRUCTIVE on the time portion only),
  and rewrites the form-display widget settings.

Migration notes
- Sites that arrived via a simpleads migration: 8004 will fix the
  string-typed storage that 1.2.0's widgets and filters couldn't handle.
- All sites: 8005 truncates 'YYYY-MM-DDTHH:MM:SS' rows to 'YYYY-MM-DD'.
  The date portion is preserved; time-of-day is discarded. Back up
  before running if you depended on time-of-day precision.

See CHANGELOG.md for the full notes.