learning circles

coordinate study groups for online courses

Merge pull request from p2pu/fix_ie11_again bump p2pu-components to v1.5.4 for ie11 compatibility

Merge pull request from p2pu/dependabot/npm_and_yarn/elliptic-6.5.3 Bump elliptic from 6.4.0 to 6.5.3

Bump elliptic from 6.4.0 to 6.5.3 Bumps [elliptic](https://github.com/indutny/elliptic) from 6.4.0 to 6.5.3. - [Release notes](https://github.com/indutny/elliptic/releases) - [Commits](https://github.com/indutny/elliptic/compare/v6.4.0...v6.5.3) Signed-off-by: dependabot[bot]

Merge pull request from p2pu/fix_ie11_again bump p2pu-components to v1.5.4 for ie11 compatibility

Bump elliptic from 6.4.0 to 6.5.3 Bumps [elliptic](https://github.com/indutny/elliptic) from 6.4.0 to 6.5.3. - [Release notes](https://github.com/indutny/elliptic/releases) - [Commits](https://github.com/indutny/elliptic/compare/v6.4.0...v6.5.3) Signed-off-by: dependabot[bot]

Bump lodash from 4.17.13 to 4.17.19 Bumps [lodash](https://github.com/lodash/lodash) from 4.17.13 to 4.17.19. - [Release notes](https://github.com/lodash/lodash/releases) - [Commits](https://github.com/lodash/lodash/compare/4.17.13...4.17.19) Signed-off-by: dependabot[bot]