Version 2019.02.10

• Building with C++11 as minimum compiler and target.

• Refresh almost all utilities, building them as C++

• New all-in-one-makefile autotools build system.

• Vastly improved testing framework.

• Import man pages from Open Group (permitted per agreement).

• New utilities: cmp, diff, expand, expr, ipcs, link, sleep, sort, tput, tabs, tsort, stty, uname, uniq, unlink

• Bug fixes.