J1-nbinteract

**JS**

Changes:

- Stop supporting Gitbook plugin (https://github.com/SamLau95/j1-nbi/pull/83)

**Python**

Changes:

- Rename `gitbook` template to `plain` (https://github.com/SamLau95/j1-nbi/pull/83)

Bug fixes:

- Fixes unicode issue on Windows (https://github.com/SamLau95/j1-nbi/pull/84)
- Fixes spec issue in publish method (https://github.com/SamLau95/j1-nbi/pull/85)

**JS**

Bug fixes:

- Fixes j1-nbi-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:

- `j1-nbi init` initializes a GitHub repo for j1-nbi.

**JS**

Bug fixes:

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