Merge remote-tracking branch 'origin/master'

# Conflicts:
#	webwhatsapi/__init__.py

Merge pull request mukulhase#113 from alfred82santa/master

Fixes & first steps in order to download encrypted files

Merge pull request mukulhase#25 from adhikasp/unread_msg

Fix "dropped" unread message

Merge pull request mukulhase#26 from adhikasp/unread_msg

get_unread_message: Fix reading sent message as unread

Merge pull request mukulhase#26 from adhikasp/unread_msg

get_unread_message: Fix reading sent message as unread

Adds a tag so that we can put this on PyPI.