Switch languages for new file.

[SkorinDima]

Hello team!

Can you please add the ability to switch input languages. Now the program
ignores pressing Ctrl+Space, you program is beautiful, but sometimes I use it
for myself and notes. If you need to enter text in two languages (Russian and
English) and this is a pain... you have to switch by tap at the screen
and the font of the Russian language looks terrible. Thanks!

The text of the Russian language. The cursor is very far away from the input
text and gets further away each time.