Updated About.txt

Kathysheehan authored
revision 868d3b51c24d9341868d644ce29a0ba14f73ae0f
About
This is a continually updated guide for all things Penflip. New features are added frequently, so no promises on completeness.

If you can't find what you're looking for here, send an email to support@penflip.com or start a [discussion](https://www.penflip.com/Penflip/help/discussions). To suggest a feature or improvement, start a [feedback discussion
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