1.6.1 - Resolve deprecation warning

Updated string interpolation for php 8.2 (https://wiki.php.net/rfc/deprecate_dollar_brace_string_interpolation)

1.6.0 - New features and extended runtime support

• Support to run the unittests on newer versions of PHP (5.5 +)
• Add API methods for converting/transcoding and transformation
• Add helper function for returning the compressed file extension

1.1.1

Bump.

0.9.1

Bump version to 0.9.1