Move hyperapp from dev to peer dependency

Currently, the version of Hyperapp to load during tests is hardcoded without version
```

```
Instead should load whatever is specified in the test project (how to load package.json from the test package?)

Inspect the test project's package.json and the current test setup containing the hardcoded unpkg Hyperapp script. Determine how the declared dependency version can be used there; done when tests load that version rather than an unversioned package and continue to pass.

Written by the indexing model from the issue text.