Nbinteract

**JS**

Bug fixes:

- Fixes nbinteract-core loading on unpkg.

**Python**

Bug fixes:

- Ensures template files are included in package

**Python**

Features:

- Add `--execute` flag to CLI that correctly generates widget output.

Bug fixes:

- Fixes CLI `--output` flag for Python 3.4

**JS**

Features:

- Errors in widget code get displayed in the status buttons.

**Python**

Bug fixes:

- Fixes error when some plotting functions are called.

**Python**

Features:

- `nbinteract init` initializes a GitHub repo for nbinteract.

**JS**

Bug fixes:

- Fixes errors from cells that don't have widget output.

**Python**

Features:

- The `nbinteract` CLI now has a `--no-top-button` flag to remove the top-level
button.

Bug fixes:

- Python 3.4 doesn't support the `{**dict1, **dict2}` syntax, so we merge
dictionaries another way to support older versions of Python.
- Fixes an issue that broke `nbinteract` CLI completely (52).
- The `nbinteract` CLI spec argument didn't actually set the spec properly.

**JS**

Bug fixes:

- Fixes `nbinteract-core` so that loading it in a webpage initializes the
NbInteract variable properly.