Current pull request contains patched `CHANGELOG.md` file for the
`v0.3.0` version.

Co-authored-by: GitHub Action <action@github.com>

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Similarly to the web dashboard, `Stop` should be available alongside
`Update and restart` action when a workspace is running but with a
template out of date.

URI handling was not able to start workspaces that were stopped and also
outdated. With this PR we check the ws status and call the proper REST
endpoint depending on whether the workspace is outdated or not.

During URI handling we can wait for workspaces to start up. The existing
implementation had no visual feedback that we are waiting/doing
anything. With this PR the header bar shows a nice work in progress
visual. Additionally, the deployment URL was not properly refreshed when
switching between different urls via URI handling. This is also fixed by
forcing TBX to render a blank page for a very short period of time and
then going back to the main page.

And try to automatically establish the connections after an expired
token was refreshed (by going again through the login sequence)

In addition a fix was provided in order to show errors when TBX is
visible after being minimized. Errors encountered while TBX was running
but the window was not visible were never displayed by TBX. This fix
queues the errors while TBX is minimized, and they will be displayed
again only when visible. This implementation is possible due to an
observable
state object that can provide information about TBX and plugin
visibility.

Among other things we also display a more human friendly version for the
exceptions raised by the http client during (but not only) workspace
polling.

Attention: users will still have to manually launch a new a remote IDE
if it was opened while a session expired.

- resolves #121