Prnt.sc: Add 'Next screenshot' and 'Previous screenshot' buttons

Adds 'Next screenshot' and 'Previous screenshot' buttons to screenshots uploaded to https://prnt.sc/ (Lightshot) so the user can cycle through the screenshots uploaded to the website.

Aquí están todas las versiones de este script. Mostrar únicamente las versiones en las que hubo cambios de código.

  • v0.1.3 20/5/2020 Added icon and converted description to markdown
  • v0.1.2 14/5/2020 "
  • v0.1.2 14/5/2020 Comment error
  • v0.1.1 10/5/2020 Shortened code; added pointer cursor over buttons
  • v0.1 10/5/2020