pysal/tobler: Release v0.6.0

Changes Version 0.6.0 (2021-01-19) We closed a total of 9 issues (enhancements and bug fixes) through 3 pull requests, since our last release on 2021-01-19. Issues Closed bump version (#129) badges out of date (#128) update docs (#127) remove accidental notebook commit (#94) h3fy example/dep (#121) more efficient unary_union in h3fy (#126) Pull Requests bump version (#129) update docs (#127) more efficient unary_union in h3fy (#126) The following individuals contributed to this release