Update, updates, updates

• updated to PY3.8.5
• updated versions of most dependencies
• new home/url
• released pypi v 2.0.3
• release docker hub v 2.0.3

JSON schema and validation mode

Merge pull request #11 from cidrblock/add_schema

Add schema support

Ansible inventory support

Initial support for loading an ansible inventory

Restructured and unified error handling

Common error handling with class/decorator
Restructured directory layout to be more "flask"

Catch additional yaml error

1.5

Catching one more error

Treat data as jinja before rendering template

Allows for variables referencing variables within the data.

Enable strict undefined

Ansible has it on by default, so we'll do the same here.

Add CouchDB saving functionality

Environment vars are used to enable and configure CouchDB support.
Add twisted for speed.

Add link to current data/template

Added a button to generate a link to the current page with data and template.

Keyboard shortcuts

Added three keyboard shortcuts, save, render, new