Essentially what the title says, I just recently switched over to the development version of opera to give the new stuff a try, and the sidebar thing is super nice! fortunately for me telegram and whatsapp are both some pretty common apps I use to chat, so it's pretty useful, but I feel it's missing some other sites that could be really useful in the context of a sidebar app like that, such as twitter, gmail, discord, skype, to name a few.

Are there any plans or ways to setup your own sidebar apps currently?