Bump version to SP3. Update README

Author: veikkos

README.md

@@ -71,6 +71,10 @@ IDE which bundles editor and the compiler.
 
 ## Releases
 
+**[Version 3](https://github.com/suomipelit/skijump3-sdl/releases/tag/sj313-sp3) - 2020-11-22**
+
+- Graceful shutdown with save when closing with window close button
+
 **[Version 2](https://github.com/suomipelit/skijump3-sdl/releases/tag/sj313-sp2) - 2020-11-08**
 
 - [Improve input handling of special keys](https://github.com/suomipelit/skijump3-sdl/pull/13)

SDLPORT.PAS

@@ -24,7 +24,7 @@ interface
 implementation
 
   uses sdl2;
-  const version: string = 'SP2';
+  const version: string = 'SP3';
         xRes = 320;
         yRes = 200;
         targetFrames = 70;