Fixed warnings

Author: rijnb

README.md

@@ -119,6 +119,19 @@ This produces the following help text:
 
 # Release Notes
 
+### 2.3.0
+
+* Arabic script added. 
+    
+* Greek script extended to be AEU-capable.
+
+* Tibetan script changed so all characters can be easily typed on a computer keyboard.
+
+* Greek, Hebrew and Arab, the languages that have (implied) vowels in mapcode sequences,
+have been extended with ABJAD conversion, to prevent more than two consecutive non-digits 
+from occurring. (As a result, mapcodes in Greek, Arab and Hebrew scripts are now often 
+one character longer than in the roman script.)
+
 ### 2.2.2
 
 * Removed minor warnings from CLion inspections.