Log Message:
Update to version 1.6.3nb1

nb1:
====
- security fixes for CAN-2004-1184, CAN-2004-1185, CAN-2004-1186
- patches from Debian/Gentoo
- addresses PR pkg/29721

1.6.3:
======
- Changes in the highlighting / pretty printing
- Support for state inheritance.
- new highlighting rules
- new output language `ansi' to print color outputs
- new encodings
- new options