set version number back to 0.1.4

Since 0.1.4 was never released

Author: alyst

Project.toml

@@ -1,7 +1,7 @@
 name = "SpatialIndexing"
 uuid = "d4ead438-fe20-5cc5-a293-4fd39a41b74c"
 author = "Alexey Stukalov"
-version = "0.1.5"
+version = "0.1.4"
 
 [compat]
 julia = "1"