MuPDF should add edit feature to the application

Components
Mupdf is a fast, lightweight, high quality PDF/XPS/CBZ/EPUB viewer for android devices, but it was observed that the documents/files viewed on this application cannot be edited; by either copy nor paste

Proposal
I will suggest the edit feature button be included on the application to improve the applications and increase its users

Mockups / Examples
Below are pictures of how the MuPDF application interface looks like

Now below is how the edit button feature will look like when added to the application

Benefits
Since the edit button will be incorporated, it will be more user friendly and also allows users to edit; copy, cut and paste words or sentences easily in a short period of time