v1.8.0

Release PyPdfApp Version 1.8
Implement various bugfixes and refactor codebase to better adhere to PEP8 coding standards and best practices.

Develop new features:

• Create a "Redact" feature.
• Create a "Highlight" feature.
• Manipulate links within a PDF.
• Add quick scroll panel with page previews.

Bring documentation, license and demo PDF up to date.