version 0.13 - release 1

The complete API/ABI diff to the previous release is available at netopeer.liberouter.org.

Main features of this release are:

• yanglint enhancements
  • parsing and validating of RPCs, RPC replies, and notifications
  • processing input files customization
• large number of bugfixes
  • most notably augment and leafref (x)path fixed according to RPC
  • this change also included modified path arguments of several API functions (lys_find_path, lyd_find_path)