clipr 0.8.1

• Fix read_clip_tbl() error with trailing newline and quote characters — append a trailing newline to clipboard content before passing to read.table(), and set default quote="" to prevent single quotes in headers from being interpreted as quote delimiters (#77)
• Check for wl-copy non-destructively on Wayland systems, fixing clipboard detection issues (#75, @danielvartan)
• Skip tests if clipr is not available (e.g. on CRAN build servers without a display)