Span represents a span of text between two Pos
Does this span contain specified line
const Pos end
Exclusive end position
Equality is based on start, end
virtual override Int hash()
Hash based on line and col
Construct with inclusive start and exclusive end. If end is before start they are automatically swizzled.
Construct with inclusive start and exclusive end
const Pos start
Inclusive start position
virtual override Str toStr()
Return zero based "line:col-line:col"