Bump acorn from 5.7.3 to 5.7.4

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>

... for calculating liquidity-related values

exchange address -> Token

remove public keyword from class functions

various small cleanups

add sort order to token

add data fetching