Add packaging and release automation

vendor/github.com/muesli/termenv/termenv_other.go

@@ -0,0 +1,30 @@
+//go:build js || plan9 || aix
+// +build js plan9 aix
+
+package termenv
+
+import "io"
+
+// ColorProfile returns the supported color profile:
+// ANSI256
+func (o Output) ColorProfile() Profile {
+	return ANSI256
+}
+
+func (o Output) foregroundColor() Color {
+	// default gray
+	return ANSIColor(7)
+}
+
+func (o Output) backgroundColor() Color {
+	// default black
+	return ANSIColor(0)
+}
+
+// EnableVirtualTerminalProcessing enables virtual terminal processing on
+// Windows for w and returns a function that restores w to its previous state.
+// On non-Windows platforms, or if w does not refer to a terminal, then it
+// returns a non-nil no-op function and no error.
+func EnableVirtualTerminalProcessing(w io.Writer) (func() error, error) {
+	return func() error { return nil }, nil
+}