Update tut1: -d:release does not turn off *allruntime checks off anymore (#11492)
Update tut1: -d:release does not turn off *allruntime checks off anymore (#11492)

According to https://nim-lang.org/blog/2019/06/06/version-0200-released.html
"The -d:release switch now does not disable runtime checks anymore. "
dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim