Version v0.1.3-beta

Changes

Better verbose output messages for -V1 and -V2 levels (better formatting for both levels, and more informative exclusion messages for -V2)
Verbose mode progress bar details is now adjustable: If verbose mode is set, the user can choose between 3 levels of details:
- 0: Disable the progress bar
- 1: No bar, just stats
- 2: Bar and stats
Better overall error handling and "graceful crashing" for all errors and exceptions
Dupfiles are now JSON-formatted text files with mandatory .imdup extension; This is to future proof the program for further extension/porting, which makes life easier, since JSON is an already established format with many parser implementation across many languages
Loaded dupfiles images are sorted in order of the largest to the smallest resolution, see commit 115ce3c
Implemented reading from dupfile for clean mode (Resolve #11)
Added program icon by @yoantran (Resolve #12)
Bumped version number
Code cleanup
More informative README.md

Fixed arguments validation unable to differentiate between -p0 and -p 0 (-p is one example among a few more flags). See commit 4ccb9e8

Full Changelog: v0.1.2-beta...v0.1.3-beta