Ensure all exported functions and types have descriptive comments

obj/entry.go

@@ -1,5 +1,7 @@
 package obj
 
+// NewEntry returns a new *Entry instance initialized with a *Object of the
+// given input JSON data.
 func NewEntry(inputJSON []byte) (*Entry, error) {
 	obj, err := NewObject(inputJSON)
 	if err != nil {
@@ -19,6 +21,7 @@ type Entry struct {
 	Index  string
 }
 
+// Address returns the Address property of the entry's Object.
 func (s *Entry) Address() string {
 	return s.Object.Address
 }