[librsvg] lib.rs: Export some missing functions, oops

[Federico Mena Quintero <federico src gnome org>]

commit 9725c843a55e7266420fa02c04eb182213567385
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Dec 3 16:05:19 2018 -0600

    lib.rs: Export some missing functions, oops

 rsvg_internals/src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/rsvg_internals/src/lib.rs b/rsvg_internals/src/lib.rs
index 23d3e763..3142e629 100644
--- a/rsvg_internals/src/lib.rs
+++ b/rsvg_internals/src/lib.rs
@@ -46,8 +46,10 @@ pub use handle::{
     rsvg_handle_acquire_data,
     rsvg_handle_acquire_stream,
     rsvg_handle_defs_lookup,
+    rsvg_handle_rust_cascade,
     rsvg_handle_rust_free,
     rsvg_handle_rust_get_base_gfile,
+    rsvg_handle_rust_get_root,
     rsvg_handle_rust_new,
     rsvg_handle_rust_node_is_root,
     rsvg_handle_rust_set_base_url,
@@ -78,6 +80,7 @@ pub use xml::{
     rsvg_xml_state_load_css_from_href,
     rsvg_xml_state_new,
     rsvg_xml_state_start_element,
+    rsvg_xml_state_tree_is_valid,
 };
 
 #[macro_use]