Template updates for Hugo update

Syntax updates for hugo v0.136.5+extended

Full Changelog: v0.3.0...v0.3.1

Serials Hugo Base Theme v0.3.0

Now accommodating latest (IIIF-compatible) viewer.

Https

v0.2.0

browser-native lazy loading

New Path declaration

v0.1.01

Update deploy-all-tamwag.sh

Now a Hugo module

v0.1.0

Renaming theme