Drop Go 1.4 compatability code everywhere

Yields a nice reduction in code size.

1 files changed, 4 insertions, 1 deletions

diff --git a/internal/cryptocore/cryptocore_test.go b/internal/cryptocore/cryptocore_test.go
index c54eac9..252c311 100644
--- a/internal/cryptocore/cryptocore_test.go
+++ b/internal/cryptocore/cryptocore_test.go
@@ -16,7 +16,10 @@ func TestCryptoCoreNew(t *testing.T) {
 	if c.IVLen != 12 {
 		t.Fail()
 	}
-	// "New(key, BackendGoGCM, 128)" is tested for Go 1.4 and 1.5+ separately
+	c = New(key, BackendGoGCM, 128)
+	if c.IVLen != 16 {
+		t.Fail()
+	}
 }
 
 // "New" should panic on any key not 32 bytes long