Prepare to publish (dart-lang/stack_trace#70)

- Merge 2 recent `-dev` changelog sections into one.
- Drop the `-dev` in the version.
- Minor cleanup in the changelog. Use present tense and format with
  periods at the end of sentences.
2 files changed
tree: 7d459860982d1fbb002b26b09fff642aa5f5890b
  1. pkgs/