release 22

Release 21

Display message to indicate no selected source in Outline tab (firefo…

…x-devtools#5266) (firefox-devtools#5506)

* Display message to indicate no selected source in Outline tab (firefox-devtools#5266)

* Fix incorrect comment

* Use the positive conditional in the ternary

release 19

Release 9.3

Release 18

[Preview] check for empty expressions

Release 16

Release 9.2

release 15