Move from an Object interface to a type

An Object should be about representing a libgit2 object rather than
showing which methods it should support.

Change any return of Object to *Object and provide methods to convert
between this and the particular type.

1 files changed, 1 insertions, 1 deletions

diff --git a/revparse_test.go b/revparse_test.go
index 091a76b..75e9ffd 100644
--- a/revparse_test.go
+++ b/revparse_test.go
@@ -46,7 +46,7 @@ func TestRevparseExt(t *testing.T) {
 	}
 }
 
-func checkObject(t *testing.T, obj Object, id *Oid) {
+func checkObject(t *testing.T, obj *Object, id *Oid) {
 	if obj == nil {
 		t.Fatalf("bad object")
 	}