fix: fix index.d.ts not being in dist (azz#56)

feat: add typescript definitions (azz#54)

Add TypeScript definition file

fix: update styled-components version to peerDependencies (azz#52)

feat: add columnGap and rowGap props (azz#49)

This PR adds the `columnGap` and `rowGap` props to enable use of the [column-gap](https://mdn.io/column-gap) and [row-gap](https://mdn.io/row-gap) properties respectively. There are no defaults for these since `gap` already included that.

Closes azz#44.

feat: use div as default component (azz#48)

* Change Cell to use div

BREAKING CHANGE: Anything relying on the Cell component rendering a `section` tag will need to be update to expect `div`s.

fix: remove align-content style (azz#47)

* Remove align-content style

* Add snapshots

fix: remove precise flag

docs: fix typo

feat: support grid-gap row/columns (azz#39)

feat: make it possible to pass numbers inside "rows" (azz#37)

* Allowing to pass numbers for rows

* Checking rows

* Allowing rows as numbers