Use inout for ref returning members in std.container.array
Categorize functions in std.math
Remove typedef handling
Clean unittest code
Merge pull request #2573 from nordlow/inout-array

Use inout for ref returning members in std.container.array
Link to building dmd/druntime and friends
More constness checks
Merge pull request #2567 from markisaa/issue_13555

Categorize functions in std.math
Merge pull request #2576 from nordlow/inout-array-take2

More constness checks for #2573
Merge pull request #2575 from burner/contributing

Link to building dmd/druntime and friends
Merge pull request #2577 from 9rnsr/remove_typedef

Remove code for typedef