v0.1.0

Install: download manifest.xml below and sideload it — instructions at
https://pptx-exporter-addin.stoatworks-labs.com/ (the same file is served
there as /manifest.xml). The add-in loads from that origin, so there is nothing
else to install and nothing to update by hand: every deploy reaches every
installed copy.

Full Changelog: https://github.com/stoatworks-labs/pptx-exporter-addin/commits/v0.1.0