1.1 (2020-09-05)

 * Make it possible to change the signature reservation with an option

 * Return errors rather than mangle documents in some cases,
   notably with pre-existing PDF forms

 * Avoid downgrading the document's PDF version to 1.6

 * A few fixes for PDF parsing and serialisation

 * Add an instructive man page

 * Add a native Go port of the utility, also usable as a library


1.0 (2018-08-03)

 * Initial release