v0.5.0

What's Changed

• Reformat code with improved modularity by @zzstbsm in #3
• Sync master branch with dev branch by @zzstbsm in #4
• Upgrade branch to staging by @zzstbsm in #5
• Release version 0.5.0 by @zzstbsm in #6
• Add support currency PLN by @zzstbsm in #7
• Add currency support: Polish Zloty by @zzstbsm in #8

Full Changelog: v0.4.0...v0.5.0