release notes for 3.0.3

RELEASE-NOTES

@@ -1,3 +1,18 @@
+# Release 3.0.3
+  * Qt GUI: sweeping now uses the Send tab, allowing fees to be set
+  * Windows: if using the installer binary, there is now a separate shortcut
+    for "Electrum Testnet"
+  * Digital Bitbox: added suport for p2sh-segwit
+  * OS notifications for incoming transactions
+  * better transaction size estimation:
+    - fees for segwit txns were somewhat underestimated (#3347)
+    - some multisig txns were underestimated
+    - handle uncompressed pubkeys
+  * fix #3321: testnet for Windows binaries
+  * fix #3264: Ledger/dbb signing on some platforms
+  * fix #3407: KeepKey sending to p2sh output
+  * other minor fixes and usability improvements
+
 # Release 3.0.2
   * Android: replace requests tab with address tab, with access to
     private keys