Minor changes.
Switch to deffered objects interface.
Remove special types to correct text preview behaviour.
Add video type
Minor changes.
Minor changes.
Prepare release.
Prepare release.
Merge branch 'develop'
Set version to 0.25.0+
Merge remote-tracking branch 'lrsjng/develop' into develop

Conflicts:
	src/_h5ai/client/js/scripts.js
	src/_h5ai/conf/options.json