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.

这些是代码更新过的版本。 显示所有版本

  • v0.1.3 2020-05-20 Added icon and converted description to markdown
  • v0.1.2 2020-05-14 "
  • v0.1.2 2020-05-14 Comment error
  • v0.1.1 2020-05-10 Shortened code; added pointer cursor over buttons
  • v0.1 2020-05-10