v0.2.5

Password protection support for the router dashboard!
New relay management screen to manage neighbours connections and payments
Dramatic efficiency improvements thanks to async Babel interactions
Faster bandwidth usage saving, now every 4 hours rather than 24 so less data is lost on reboot
Use 105% of the median gas price in order to avoid the situation described in Dev update #70
Devices will now apply spare change from slight overpayments before instead of after enforcing
Added retries for monitoring tunnels
Fixed a bug where the exit may be paid twice in quick succession
Fixed a bug where the babel routing table could grow too large for Rita to read
Fixed a bug where N600's and N750's did not have all of their required packages installed
Fixed an issue where openssl could segfault