changes to error handling

readme, changelog updated to reflect changes

version bump

CHANGELOG.md

@@ -11,6 +11,14 @@ Before any major/minor/patch bump all unit tests will be run to verify they pass
 
 -   [x]
 
+## [1.4.0] - 2022-09-07
+
+### Changed
+
+-   changes to error handling.
+    -   functions that wrap capi calls now return error types.
+    -   higher level functions print error messages
+
 ## [1.3.0] - 2022-08-22
 
 ### Added