Minor fix to convert to lowercase, fix error response

client.go

@@ -12,7 +12,7 @@ import (
 const (
 
 	// version is the current version
-	version = "v0.4.0"
+	version = "v0.4.1"
 
 	// defaultUserAgent is the default user agent for all requests
 	defaultUserAgent string = "go-polynym: " + version

client_test.go

@@ -21,7 +21,7 @@ func TestNewClient(t *testing.T) {
 func ExampleNewClient() {
 	client := NewClient(nil)
 	fmt.Println(client.UserAgent)
-	// Output:go-polynym: v0.4.0
+	// Output:go-polynym: v0.4.1
 }
 
 // BenchmarkNewClient benchmarks the NewClient method

go.sum

@@ -3,6 +3,7 @@ github.com/afex/hystrix-go v0.0.0-20180209013831-27fae8d30f1a/go.mod h1:SkGFH1ia
 github.com/cactus/go-statsd-client/statsd v0.0.0-20200423205355-cb0885a1018c/go.mod h1:l/bIBLeOl9eX+wxJAzxS4TveKRtAqlyDpHjhkfO0MEI=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gojektech/heimdall/v6 v6.1.0 h1:M9L1xryMKGWUlAA33D0r0BaKiXWzvuReltDPPkC5loM=
 github.com/gojektech/heimdall/v6 v6.1.0/go.mod h1:8g/ohsh0GXn8fzOf+qVrjX5pQLf7qQy8vEBjBUJ/9L4=

polynym.go

@@ -87,7 +87,7 @@ func GetAddress(client Client, handleOrPaymail string) (response *GetAddressResp
 			if len(response.ErrorMessage) == 0 {
 				response.ErrorMessage = "unknown error resolving address"
 			}
-			err = fmt.Errorf("error: %s", response.ErrorMessage)
+			err = fmt.Errorf("%s", response.ErrorMessage)
 		} else {
 			err = fmt.Errorf("bad response from polynym: %d", resp.StatusCode)
 		}
@@ -104,7 +104,7 @@ func GetAddress(client Client, handleOrPaymail string) (response *GetAddressResp
 // HandCashConvert now converts $handle to paymail: [email protected]
 func HandCashConvert(handle string) string {
 	if strings.HasPrefix(handle, "$") {
-		return strings.Replace(handle, "$", "", -1) + "@handcash.io"
+		return strings.ToLower(strings.Replace(handle, "$", "", -1)) + "@handcash.io"
 	}
 	return handle
 }