fix(output): set default tty before querying the terminal

feat(deps): upgrade golang.org/x/sys

chore(examples): update ssh example

docs: fix template helper documentation

fix: shims for AIX and Plan9

Require Go 1.13

Don't run OSC queries on CI

Use HSLuv colorspace for color profile conversions

Support backslash-less report termination, as used by rxvt