Rated 5 out of 5 stars

Dear Jhon,

If Quicktext is having 130,984 users, Such a Popular Extension, But I Request you to remove some time for this great extension available for the Beta & Nightly Version too. This will help Mozilla to Development in Thunderbird More Faster, As without this type of Critical Extension we have to be more depend on the stable & not able to use the Beta or Nightly Version.

Extremely Sorry, If i had any mistake.

This review is for a previous version of the add-on (5.10). 

There is ongoing effort to convert the extension to a pure WebExtension, which will make it compatible with Beta/Daily:
https://github.com/jobisoft/quicktext/issues/371

But why do you down-vote Quicktext, if you like it? Giving 3 stars on a 5 star add-on is a down-vote.