Don't preflight zoom levels for potential as-needed dropping (#40)

* Working on eliminating preflighting

* Adjust for the map/images schema change

* Avoid generating duplicate tiles with the detail reduction strategy

* Do error checking if tiles in a directory can't be written

* Update changelog and version

* Revert unintentional code reordering

* Neglected to add the exit on error here

version.hpp

@@ -1,6 +1,6 @@
 #ifndef VERSION_HPP
 #define VERSION_HPP
 
-#define VERSION "v2.13.1"
+#define VERSION "v2.14.0"
 
 #endif