Inline Attributes Disable Image Centring

[Foggalong]

When adding an inline attribute to an image to control its width, as in

![polyyolks]({{ 'path/polyyolks.jpeg' | relative_url}}){: style="max-width: 300px;" }

the automatic centring of the image by markdown is turned off and it aligns to left. This can be fixed by adding display: block; into the style of images as standard (which can be overridden in Wren by using the left or right image class).