pub: release v1.0.7 -- peerDeps support for React 19

- various internal CI changes to support newer Node etc

- no API surface changes!

deps: update peerDeps to support React 18 without warnings (#89)

- seems to work without any component modifications needed on React 18
  - React 18 was mostly _deprecations_ and new features per the upgrade guide: https://reactjs.org/blog/2022/03/08/react-18-upgrade-guide.html
  - React 18 has concurrent mode opt-in, which is technically breaking, but doesn't seem to effect this library (fortunately)

- ensure tests pass with React 18
  - update devDeps to React 18, react-dom 18, @types/react 18
  - update devDeps to RTL 13 which supports React 18
    - see previous commit for the migration from Enzyme to RTL since Enzyme never had official support for React 17, let alone React 18

- update example to use `createRoot` instead of `ReactDOM.render`
  - this is one of the opt-ins to React 18 mode, and doesn't seem to change anything about the example (just no warnings anymore)

pub: release v1.0.5

- I'm a bit rusty, forgot to merge my PR locally / pull from GH
  when I published v1.0.4, so it only had a version change and nothing
  else..... awks, my b
  - take 2

pub: release v1.0.4 -- peerDeps support for React 17

- updated internal test suite to React 17 as well
- no other changes!

(pub): publish v1.0.3

- no actual API surface changes!!

- add CHANGELOG.md that points to GH Releases page for now
- slight changes to docs, including:
  - add a CodeSandbox playground
  - add a GIF to the README

- LOTS of internal stability and automation upgrades, including:
  - add tests and 100% code coverage!!
  - add Travis CI support
  - officially add Standard linting to devDeps (not just global)
  - and lint, test, and changelog scripts
  - auto-update outdated package-lock and audit devDeps

now that we're past the v1.0.0 boundary, really focusing on
stability, automation, and quality!! :)

(pub): publish v1.0.2

- update NPM description to match v1.0.0 changes and GH description
- lots of minor docs updates too

(pub): publish v0.3.1

mostly a backport of v1.0.1

- patch fix to have the same bg color on resize

(pub): publish v0.2.5

mostly a backport of v0.3.1 which backports v1.0.1

- patch fix to have the same bg color on resize

(pub): publish v0.1.11

mostly a backport of v0.3.1 which backports v1.0.1

- patch fix to have the same bg color on resize

(pub): publish v1.0.1

- patch fix to have the same bg color on resize