Update to 1.46

Upstream changes:
What's new in v1.46 since v1.44:

        Thanks to Rik Signes, there is a new
        Text::Template->append_text_to_output method, which
        Text::Template always uses whenever it wants to emit output.
        You can subclass this to get control over the output, for
        example for postprocessing.

        A spurious warning is no longer emitted when the TYPE
        parameter to ->new is omitted.

(wen)