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/tree.go b/tree.go
index f543c11..8288176 100644
--- a/tree.go
+++ b/tree.go
@@ -23,7 +23,7 @@ const (
 )
 
 type Tree struct {
-	gitObject
+	Object
 	cast_ptr *C.git_tree
 }