Updating version to v1.5.3-beta (for brave Bluetooth beta testers)

Updates to build so that more devices are supported on Play Store (v1…

….5.1); In progress modifications Bluetooth/BLE connection code (repo files cleanup)

Updating the DESFire set header byte commands to those current in the…

… latest emsec/ChameleonMini pull request (number 322)

Adding DESFire tag commands from the most recent development sources …

…(emsec firmware pull request pending)

Updating logging codes for DESFire tag support and adding a fallback …

…log formatter for unknown log codes (so that the user still gets a reasonable display if the app is not 100% up to date)

Rolling back minimum SDK to 26 to support more devices -- New release…

… version is v1.4.6

Rolling back minimum SDK to 26 to support more devices -- New release…

… version is v1.4.6

Fixing Play Store rejected permission MANAGE_EXTERNAL_STORAGE

Preparing to post new version to Play Store -> v1.4.3

Multiple updates and bug fixes (upgrade to SDK >= 30 at CMLD version …

…1.4.1)