v1.16.0

ADDED:
* tplx/sprigx

multierr/TODO

@@ -0,0 +1,21 @@
+- add unwrapping
+  https://go.dev/blog/go1.13-errors#the-unwrap-method
+- add As method, takes a ptr to a slice of []error to return the first matching error type (errors.As) for each?
+  - add AsAll [][]error ptr param for multiple errors per type?
+  - add Map, returns map[string][]error, where key is k:
+	var sb strings.Builder
+	t = reflect.TypeOf(err)
+	if t.PkgPath() != "" {
+		sb.WriteString(t.PkgPath())
+	} else {
+		sb.WriteString("<UNKNOWN>")
+	}
+	sb.WriteString(".")
+	if t.Name() != "" {
+		sb.WriteString(t.Name())
+	} else {
+		sb.WriteString("<UNKNOWN>")
+	}
+	k = sb.String()
+  - support generics for similar to above?
+    - this might allow for "error filtering"