# Release notes

## Version history

* Version [JPL 7.x](https://jpl7.org/) uses SWI Prolog V7 and has modernise JPL's APIs significantly.

    * Version [7.6.1](ReleaseNotes761.md) works with SWI versions V8.3.x+. It adds Dictionaries as a data type and uses Maven build automation tool.

    * Version [7.6.0](ReleaseNotes760.md) works with SWI versions V8.1.x+. It adds Rationals as a data type and has several term methods refactored into class Term.
        
    * Version [7.5.0](ReleaseNotes750.md) works with SWI versions V7.4.x to V7.7.x. It has a new implemention of iterators ans solution methods in Queries and better handling of quoted terms.

    * Version [7.4.0](ReleaseNotes740.md) works with SWI versions V7.4.x to V7.7.x. It has a new implemention of JRefs as blobs to address Java objects from Prolog.
    
* Versions [JPL 3.x,y](http://www.swi-prolog.org/packages/jpl/) implemented many changes and worked with SWI V5.2.0 or later (it used multi-threading FLI calls not available in older versions) and Java 2 runtime.  It was tested with Microsoft Visual C/C++ 5 under Windows NT 4.0 (SP6a). 

* Version **2.0.2** was released in March 18, 2003. It was developed by Paul Singleton and tested on Windows NT4, and was not tested on any non-Windows platform

* The first version **1.0.0** of JPL was released in Feb 25, 1999 and was authored by Fred Dushin. It worked with Linux , under kernel 2.1.24.