owidapi 0.1.2

• Fixed owid_get_catalog() returning only the first 1000 charts. Datasette caps
  the _size=max parameter at its max_returned_rows setting, so the catalog was
  silently truncated and owid_search() searched only a fraction of it. The
  catalog is now paged through and returned in full. Rows come back sorted by
  id as a result.
• Fixed owid_get_catalog() failing after OWID removed the isIndexable column
  from the catalog. Logical and date columns are now only parsed when they are
  actually present, so future schema changes no longer break the function.
• Guarded the owid_search() example against an unreachable API, since
  owid_get_catalog() returns NULL in that case.
• Tests now use mocked httr2 responses instead of live API calls. The few
  remaining tests against the real API check that the OWID schema still matches
  what the package expects and are skipped on CRAN.