Bug #23, Adopt SVG IET logo in "iet_attribution" WP plugin
Bug #25, Small edits to JuxtaLearn_ClipIt_Client plugin PHP
PHP fix - late static bindings - use 'static::' instead of 'self::'
Bug #25, Fix ClipIt client - use 'pre_post_update' WP hook [JuxtaLearn]

* Switch from 'save_post' action - only called if content changes, not meta
* Also, introduce a simple file-logger to debug the API