add stripe-highlight to stripe-buffer custom group
enforce indent-tabs-mode
fix indentation
follow header conventions
stripe-buffer-mode: use cond instead of if+progn
make compatible with hl-line

Advice `hl-line-highlight' like it is done in `hl-line+.el', but only
if that isn't available (so that the same advice isn't applied twice).

There is no other reason why stripe-buffer would need hl-line+, and
now there is none.
fix several issues in stripe-listify-buffer

- `featurep' only returns non-nil if the feature is *loaded*, not when
  it isn't loaded but can be found on the `load-path'.  So this makes
  no sense: (if (featurep f) (require f) ...)

- Now that `hl-line' is enough we don't have to check for `hl-line+'
  anymore and can just always enable `hl-line-mode'.

- Setting `cursor-type' to nil is evil.  In some modes it might make
  sense, but until there is a way it should be nil we should not touch
  it at all.

Update Commentary accordingly.
link to original and correct authorship information
eliminate second return point so we don't need cl
stripe-max-buffer-size: improve doc-string
make stripe-listify-buffer and stripe-org-table-enable interactive
mention stripes-org-table-enable in README

Instead of the old name `org-table-stripes-enable'.
add turn-on-stripe-buffer-mode

This allows turning on `stripe-buffer-mode' without turning on
`hl-line-mode' at the same time.

Update documentation accordingly (also removing obsolete information
about hl-line+).
integrated tarisuse's changes
better invisible cursor
separate face for stripe-buffer hl-line
minor
main part done
clean-up
+ stripe-redraw-window