feature/#71

Description

Improve Steg algorithms using varint 128 for encoding/decoding (like proto buffers). Also look at using UTF-8/unicode.

Type

• Bug Fix
• Improvement
• New Feature

Checklist

• I have read the CONTRIBUTING doc
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation and tests (if appropriate)

Fixes #71 (closed)