Select All Points on Grease Pencil Layer

When using Grease Pencil in Edit Mode, I find it very useful being able to select all the points on a layer by right clicking on the particular layer and clicking the button I added ('Select Points on Layer'). It's an idea I took from other software I use, and I recommend Blender make this small addition.

I know you can press A to select all, and L to get all linked points, but this is simpler, more precise and requires fewer steps.

If any wants the addon for this little button, you can download it for free from my github which I'll paste in the comments.