DMD: how to restore old unittest+main

[novice3]

On Thursday, 13 August 2020 at 08:30:44 UTC, Jonathan wrote:
> Is there a reason you need to run all unittests every time you 
> want to run the program?

App will be used by other peoples,
and i will release it after developing without unittests.
Release is rare action for me.
Running while developing is frequent action.
I want see is all ok - unittests and main{} - for every test run 
while develop whithout special efforts from me.
Then release with some efforts (compile without "-unittest", with 
"-release" switch etc).