0.4.1 2019-12-05

    - Fixing SQL placeholders for fuzzy search of strings.

0.4.0 2019-12-05

    - Adding overloads for OPTiMaDe::FilterParser::Property. Replacing
      push_identifier() via direct push to object.
    - Adding convenience methods left() and right() for
    - Introducing classes OPTiMaDe::FilterParser::Negation,
      OPTiMaDe::FilterParser::AndOr and OPTiMaDe::FilterParser::Known.
    - Changing the way the delimiter is passed to to_SQL() methods.
    - Implementing SQL output with placeholders instead of values.

0.3.0 2019-08-19

    - Introducing method modify(), which traverses and modifies the built
      filter tree.
    - Modifying the constructor for OPTiMaDe::FilterParser::Property.
    - Adding 'Changes' (this file) to MANIFEST.

0.2.0 2019-08-12
    - Combining 'IS' and 'KNOWN'/'UNKNOWN' lexems together.
    - Fixing 'IS KNOWN'/'IS UNKNOWN' translation to SQL.
    - Implementing backwards translation to the string representation.
    - Unifying layout of parsed lists.
    - Adding roundtrip tests.
0.1.0 2019-07-20

    - Initial release.