Version 2.6.7 (faster runs after 1st execution)

Fixes/Features

• Optimize calling md5Cecksum which results in huge gains in runs after the 1st one.
• README updated with further clarifications explanation on file structure and loading/replace/delete logic and more FAQs
• flush on printing progress information when in paralell processing to ensure ordered output.
• Enhancement #33: New option -u --not-is-already-uploaded to disable checking if file is already actually loaded on flickr

Output Messages

• flush on printing progress information when in paralell processing to ensure ordered output of processed pics counter

Environment and Coding

• Python 2 + 3 compatibility