Require StandardLib v1.18.0+
Fix typo 'Strip JPEG EXIF' option text
Fix "Allow inline display of SVG image attachments" option was not actually wired up as expected
Improve resizing of SVGs to avoid unexpected truncation
Improve handling of SVGs which might have been rejected due to formatting
Add "Only admins can upload SVGs as images" option
Add SVG support for XFRM icons