v0.5.0

Removed

• Breaking: the [path:]INDEX@lo-hi added-line range selector (added in
  0.4.0) is removed. Its contiguous-slice implementation produced an
  unapplicable hunk for a leading or interior slice of an addition block placed
  mid-file: it kept the leading context but dropped the trailing context, so
  git apply could not anchor the piece (patch does not apply). The per-line
  [path:]INDEX@L<set> selector supersedes it: @L addresses any subset of a
  sub-hunk's changed lines, keeps both leading and trailing context (every
  subset applies), and can express any added-line range plus what @lo-hi
  could not (deletions, interior slices, replacements). A selector that still
  uses the @lo-hi form now fails with exit 2 and a message pointing at the
  @L replacement.

Changed

• The human list marker for an all-additions sub-hunk is renamed from
  [+range] to [+add] (the @lo-hi range form it advertised is gone). The
  addition_only field in list --json is unchanged.