0.1.1 - Context Manager support and misc changes.

0.1.1

New Feature(s)

Added support to invoke the Virustotal class as a Context Manager.

Example:

from virustotal_python import Virustotal

# v2 example
with Virustotal(API_KEY="Insert API key here.") as vtotal:
    # Your code here

# v3 example
with Virustotal(API_KEY="Insert API key here.", API_VERSION="v3") as vtotal:
    # Your code here

Misc Updates

1. Updated LICENSE year to 2021.
2. Bumped version to 0.1.1.
3. Added tests for Context Manager support.
4. Updated README with Context Manager example and changelog for version 0.1.1.