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This is the first relax version of the new 2.0 line. Due to incredible number of changes to the core and large improvements visible throughout prompt and graphical user interfaces (UIs), it was decided that a brand new development line would be created. The 1.3 line will now be discontinued as it quite old - it came into existence 6 years ago (see https://mail.{{gna.org/public/mailing list url|relax-devel/2006-10/msg00053.html)}}.
The features of these release include a complete restructuring of the user functions so that special 'definitions' are used to automatically create the user function front ends in all UIs. This now means that all user functions are now accessible from the GUI. The help system in the prompt UI mode has been revamped and is now better formatted (with better line wrapping for MS Windows). The core of the specific analysis API has been redesigned to make it much easier for NMR spectroscopists to add their own analysis types to relax. The GUI test suite has been significantly expanded so that the GUI should now be, and remain, robust. The XML formatted relax results and save files have been redesigned and improved for both numerical accuracy and readability. Data pipes can now be grouped together in special data bundles, and analysis tabs in the GUI are now associated with a specific bundle. BMRB export (as well as import) and support for Bruker Dynamics Centre relaxation data files are now tightly integrated into the GUI. Many other improvements can be found throughout the GUI. The incredible number of changes that have gone into this release can be seen below!