Iterators provided by the IEnumerable class and duck-typed collections have been improved. Performance has been improved for those implemented via the native C++ containers, and assignment to referenced elements has been supported where possible.
Added method overloads to numerous classes. These support ArrayView-typed parameters where only ArrayPtr was supported previously.
Exception class default messages are now in line with Microsoft .NET behavior. No language-specific messages are supported at the moment.
Added the ability to prohibit use of RC4 encryption in PDF 2.0.
Added the ability to format fields in Number and Date format.
Added the ability to remove adbe.x509.rsa_sha1 sub filter when saving documents.
Added PDF header validation.
Added support for AFRelationship which describes associated files relationships.
Improved Document.Save() method when merging multiple PDF files.