Remove version numbers and add library version macro

Author: czjaso

source/include/cellular_api.h

@@ -38,6 +38,16 @@
 #endif
 /* *INDENT-ON* */
 
+/**
+ * @cond DOXYGEN_IGNORE
+ * The current version of this library.
+ *
+ * If CELLULAR_LIBRARY_VERSION ends with + it represents the version in development
+ * after the numbered release.
+ */
+#define CELLULAR_LIBRARY_VERSION    "v1.4.1+"
+/** @endcond */
+
 /* IoT Cellular data types. */
 #include "cellular_types.h"