workflow: Bump minimum `go` version to `1.18`

...as required for `x/term` `v0.29.0` and `x/sys` `v0.30.0`.

Merge pull request #3 from niten94/legacy/term-makeraw

Set and restore raw mode using `x/term` on Unix systems

Rename project repository import paths

Improve clipboard interface

Rename import path

Discard invalid OSC52 events

Add a sample style to hello world.

Remove go1.11 from travis matrix.

Fix endless loop

InjectKeyBytes would go into an endless loop for single bytes smaller than a blank.

Update documentation for V2.