commit 9fe1d36

Document selecting with shift

Fixes: https://todo.sr.ht/~taiite/senpai/91

 1@@ -63,6 +63,12 @@ of messages are in the timeline:
 2 - Notices are shown with an asterisk (*\**) followed by the user nickname and a
 3   colon
 4 
 5+# SELECTING TEXT
 6+
 7+In order to select text with a mouse, hold SHIFT while clicking and dragging
 8+the mouse. *Clicking and dragging without holding SHIFT will not work, as
 9+senpai eats these events for eg selecting channels.*
10+
11 # KEYBOARD SHORTCUTS
12 
13 *CTRL-C*