Add new releases to README

Author: mkurz

README.md

@@ -24,9 +24,11 @@ The Play Ebean plugin supports several different versions of Play and Ebean.
 
 | Plugin version                                                                                         | Play version | Ebean version  |
 |--------------------------------------------------------------------------------------------------------|--------------|----------------|
+| 8.3.0                                                                                                  | 3.0.2+       | 15.1.0         |
 | 8.2.0                                                                                                  | 3.0.2+       | 15.0.1         |
 | 8.1.0                                                                                                  | 3.0.1+       | 13.23.0        |
 | 8.0.0                                                                                                  | 3.0.0+       | 13.17.3        |
+| 7.3.0                                                                                                  | 2.9.2+       | 15.1.0         |
 | 7.2.0                                                                                                  | 2.9.2+       | 15.0.1         |
 | 7.1.0                                                                                                  | 2.9.1+       | 13.23.0        |
 | 7.0.0                                                                                                  | 2.9.0+       | 13.17.3        |