v1.9.1

• Drop ; after #pragma.

• Update CI setups.

• Fix repeated evaluations of &parse-at expression.

• Fix stray Python escape sequence.

• Drop freebsd-12 from CI.

• GH-1617: Fix handling of %synchronize-* attributes for units in lists.

  We previously would not detect %synchronize-at or %synchronize-from attributes if the unit was not directly in a field, i.e., we mishandled the common case of synchronizing on a unit in a list.

  With this patch we now handle these attributes, regardless of how the unit appears.