Upgrade to latest mobx

[jeff-phillips-18]

What

Closes #16

Description

Upgrade to MobX 6 and MobX react 7

MobX upgrade doc: https://mobx.js.org/migrating-from-4-or-5.html

Type of change

• [x] Feature
• [x] Refactoring (no functional changes, no api changes)

[jeff-phillips-18]

Looks great @jeff-phillips-18 .

Just FYI the Topology Pipelines demos don't visibly update the UI when toggling checkboxes but this seems to be out of scope because this issue exists on the v5 branch too.

Ah, thanks @jenny-s51 ! This was an issue introduced earlier. I've fixed it here.

[jeff-phillips-18]

Surge: https://topology-mobx-upgrade.surge.sh

[github-actions[bot]]

:tada: This PR is included in version 5.0.0-alpha.2 :tada:

The release is available on:

• GitHub release
• npm package (@alpha dist-tag)

Your semantic-release bot :package::rocket:

[github-actions[bot]]

:tada: This PR is included in version 5.0.0-prerelease.1 :tada:

The release is available on:

• GitHub release
• npm package (@prerelease dist-tag)

Your semantic-release bot :package::rocket: