Mark 1.3 version as stable

README.md

@@ -119,7 +119,7 @@ To remove XMI support, define `OPNMIDI_DISABLE_XMI_SUPPORT` macro and remove tho
 * [OPNMIDI Player for Android](https://github.com/Wohlstand/OPNMIDI-Player-Java/) - a little MIDI-player for Android which uses libOPNMIDI to play MIDI files and provides flexible GUI with ability to change bank, flags, number of emulated chips, etc.
 
 # Changelog
-## 1.3.0   dev
+## 1.3.0   2018-06-19
  * Optimizing the MIDI banks management system for MultiBanks (Thanks to [Jean Pierre Cimalando](https://github.com/jpcima) for a work!)
  * Fixed incorrect initial MIDI tempo when MIDI file doesn't includes the tempo event
  * Fixed an incorrect processing of auto-flags