lk2nd 0.3.0

- Add new supported devices

- Make modem work on motorola-harpia with a quirk in lk2nd
- Add "fastboot oem dtb" command to dump DTB passed by bootloader

Supported devices:
- Marshall London
- Motorola Moto G4 Play (harpia)
- Samsung Galaxy A3 (2015) - SM-A300FU
- Samsung Galaxy A5 (2015) - SM-A500F, SM-A500FU
- Samsung Galaxy J5 (2016) - SM-J510FN
- Samsung Galaxy S4 Mini Value Edition - GT-I9195I
- Samsung Galaxy Tab A 8.0 LTE (2015) - SM-T357W
- Samsung Galaxy Tab A 9.7 WiFi (2015) - SM-T550
- Wileyfox Swift