Add function to batch edit glyphs

[mrk-z]

It would be great to have the ability to select multiple glyphs and perform the same action to all of the selected glyphs

Some actions I can currently think of which would be useful if they can be applied to multiple glyphs at the same time:

• Change the status
• Change advance width
• Add a component
• Paste a shape or a component
• Delete a common shape or component
• Add one or more layers
• Add glyphs (currently if I have a list of glyphs that I want to add, I can paste them in the text box, but still need to click and confirm each one of them. Maybe this could be that we would be able to select multiple empty glyphs to click and add them at the same time, or a separate function where we can input a text list and add them with one click.)
• Duplicate glyphs
• Delete glyphs
• Rename glyphs (e.g. add a suffix to multiple glyphs.)

[justvanrossum]

This is unlikely going to happen in the short term, and we should probably look into making scripting these kinds of things easier.