Re-export 'toml_edit' since it appears in public API

Author: nbigaouette

src/lib.rs

@@ -43,6 +43,7 @@ pub use index::*;
 pub use manifest::{find, get_dep_version, set_dep_version, LocalManifest, Manifest};
 pub use metadata::manifest_from_pkgid;
 pub use registry::registry_url;
+pub use toml_edit;
 pub use util::{
     colorize_stderr, shell_note, shell_print, shell_status, shell_warn, shell_write_stderr,
     shell_write_stdout, Color, ColorChoice,