turtle 1.6.0

[alexeyzab]

turtle-1.6.0 (changelog) (Gabriella Gonzalez Gabriel439@gmail.com @Gabriel439) is out of bounds for:

• bench-1.0.12 (>=1.2.5 && < 1.6). Gabriella Gonzalez Gabriel439@gmail.com @Gabriel439. @Gabriel439. Used by: executable
• dhall-1.41.1 (< 1.6). Gabriella Gonzalez Gabriel439@gmail.com @Gabriel439. @dhall-lang. Used by: test-suite