Code enhancements of the Translator classes and bug fix

Version 1.5.2 is a stable release.

Fixed the bug identified in the Issue 14:   find_definitions can returns antonyms

Redesigned the Exceptions in these modules:

• deep_translator.py
• google_translator.py
• mymemory_translator.py

Updated the available languages for translations in these modules:

• deep_translator.py
• google_translator.py
• mymemory_translator.py

Added a module for email address verification and one for colorized text for specific error messages sent to the console/terminal.

Updated and tested the dependencies for WordHoard.

Signed-off-by: John Bumgarner [email protected]