Bump acorn from 6.0.4 to 6.4.1

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.19)
Signed-off-by: dependabot[bot] <support@github.com>

Bumps [acorn](https://github.com/acornjs/acorn) from 6.0.4 to 6.4.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/6.0.4...6.4.1)
Signed-off-by: dependabot[bot] <support@github.com>

Export rawCreateElement

This is more generic than createDOMElement (which accepts String as
first argument).

updates

Bump lodash from 4.17.11 to 4.17.15

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.11 to 4.17.15.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.11...4.17.15)
Signed-off-by: dependabot[bot] <support@github.com>

Update to purescript 0.13 for development. Note that I had to patch test-spec locally and do overrides