add license - CNPLv5+

Bump elliptic from 6.5.2 to 6.5.3

more details in README, incl extension build instructions

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.2 to 6.5.3.
- [Release notes](https://github.com/indutny/elliptic/releases)
- [Commits](https://github.com/indutny/elliptic/compare/v6.5.2...v6.5.3)

Signed-off-by: dependabot[bot] <support@github.com>

Bump minimist from 1.2.0 to 1.2.5

Bump djangorestframework from 3.8.2 to 3.9.1

Bump requests from 2.11.1 to 2.20.0

Bumps [requests](https://github.com/psf/requests) from 2.11.1 to 2.20.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/master/HISTORY.md)
- [Commits](https://github.com/psf/requests/compare/v2.11.1...v2.20.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [minimist](https://github.com/substack/minimist) from 1.2.0 to 1.2.5.
- [Release notes](https://github.com/substack/minimist/releases)
- [Commits](https://github.com/substack/minimist/compare/1.2.0...1.2.5)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.8.2 to 3.9.1.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](https://github.com/encode/django-rest-framework/compare/3.8.2...3.9.1)

Signed-off-by: dependabot[bot] <support@github.com>

Bump fstream from 1.0.11 to 1.0.12

Bump django from 1.11.20 to 1.11.29

Bumps [django](https://github.com/django/django) from 1.11.20 to 1.11.29.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/compare/1.11.20...1.11.29)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [fstream](https://github.com/npm/fstream) from 1.0.11 to 1.0.12.
- [Release notes](https://github.com/npm/fstream/releases)
- [Commits](https://github.com/npm/fstream/compare/v1.0.11...v1.0.12)

Signed-off-by: dependabot[bot] <support@github.com>

Bump jquery from 3.3.1 to 3.5.0

Bump lodash.mergewith from 4.6.1 to 4.6.2

Bump eslint-utils from 1.3.1 to 1.4.3

Bump acorn from 5.7.3 to 5.7.4

Bump lodash from 4.17.11 to 4.17.19

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.11 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.11...4.17.19)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [lodash.mergewith](https://github.com/lodash/lodash) from 4.6.1 to 4.6.2.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [eslint-utils](https://github.com/mysticatea/eslint-utils) from 1.3.1 to 1.4.3.
- [Release notes](https://github.com/mysticatea/eslint-utils/releases)
- [Commits](https://github.com/mysticatea/eslint-utils/compare/v1.3.1...v1.4.3)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [jquery](https://github.com/jquery/jquery) from 3.3.1 to 3.5.0.
- [Release notes](https://github.com/jquery/jquery/releases)
- [Commits](https://github.com/jquery/jquery/compare/3.3.1...3.5.0)

Signed-off-by: dependabot[bot] <support@github.com>