This is for Visual Studio users who also happen to use CodeRush from DevExpress. Disclaimer: I do not work for DevExpress.
They’ve added a feature that allows you to embed images in source code. This is quite helpful especially for mathematical programming for visualising formulas, say.
It stores a single copy of the pasted image in a local folder so can be added to source control. Users who don’t have CodeRush would still be able to access the image, which would appear as a commented out file name reference in the source code.
This feature also, as of the most recent revision 18.1.13, works with Q# files (at my request).
I can imagine Visual Studio getting such a feature natively or via an extension in the future.