v1.6.0

TupleTools v1.6.0

Diff since v1.5.0

• fix type stability and compilation times for larger tuples

Merged pull requests:

• Remove unnecessary REQUIRE (#21) (@hyrodium)
• Remove unnecessary imports (#22) (@hyrodium)
• Bump julia-actions/cache from 1 to 2 (#23) (@dependabot[bot])