Compatability fix

• Fixed compatibility issues with Trådfri gateway versions 1.15 (see #15 & #16)
• Updated dependencies

Add mqtt broker username and password options

• Add mqtt broker username and password options

Bugfix discovery on reset

Fix bug where .well-known/core result was not parsed after reset() being called

Discover all endpoints

• Discover all endpoints using .well-known/core
• Update dependencies

v0.0.5: Bugfix and custom topics

• Bugfix: Authentication failed on first run (or every run without --storage or --token)
• Feature: Added --topicPrefix and --topicCommand options to set custom MQTT topics

Also added a docker image for arm7 (raspberry pi 3+) at bonan/tradfri-mqtt:arm7