The 0.1 version adds the "mode" utilities, suppresses escape codes in non-TTY environments, and handles turning on/off Terminal Mode on Windows. 0.1.2 is just a fix the README.
(And 0.1.1 doesn't exist-- I think I have an off-by-1 error somewhere in my Release action.)
Full Changelog: v0.1.0...v0.1.2