Attachment editor 2.4

Attachment editor v2.4 changes:

Fixed rotation direction when GD is enabled.

Attachment editor v2.3 changes:

Transparent backgrounds now retained.

Attachment editor v2.2 changes:

Fixed issue with image optimization and add border.

Attachment editor v2.1 changes:

Now supports Image optimization (WebP) function.

Attachment editor v2.0 changes:

Now also properly works in direct messages.

Attachment editor v1.9 changes:

Now correctly updates internal_date and data files.

Attachment editor v1.8 changes:

Compatible XF 2.x versions: 2.3

Attachment editor v1.7 changes:

Remove no longer used code in a template.

Attachment editor v1.6 changes:

Improved thumbnail image resolution.

Attachment editor v1.5 changes:

Now shows attachment size. Can now be used to convert PNG to JPG without any other changes to the image.