Merge branch 'master' of github.com:inorganik/countUp.js

Bump lodash from 4.17.15 to 4.17.19 (inorganik#239)

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.15...4.17.19)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

npm i after dependabot PRs (only dev dep changes)

bump version for types in package

Switching to Commonjs module, how to include in README

increment version

2.0 ready to ship

fixing negative grouping issue

increment version, move demo js into separate file

fixed separator check bug (removed separator check)