ghc-call-stack-0.2.0-bp153.1.20

- Drop obsolete group attributes.

- Update call-stack to version 0.2.0.
  Upstream does not provide a change log file.

- Use https URL to refer to bugs.opensuse.org.

- Cosmetic: replace tabs with blanks, strip trailing white space,
  and update copyright headers with spec-cleaner.

- Prefer the new %license attribute over %doc.

- Updated with latest spec-cleaner version 0.9.8-8-geadfbbf.

- Update to version 0.1.0 with cabal2obs.