Rolling version number 1.11.0 -> 1.12.0

Author: AHLDev

setup.py

@@ -75,7 +75,7 @@ def run_tests(self):
 
 setup(
     name="arctic",
-    version="1.11.0",
+    version="1.12.0",
     author="Man AHL Technology",
     author_email="[email protected]",
     description=("AHL Research Versioned TimeSeries and Tick store"),