Bump gradle version

Merge pull request lightsail-network#245 from stellar/0.10.0

Bump version to 0.10.0

Merge pull request lightsail-network#231 from tamirms/key-pair-fix

Remove KeyPair dependency from requests and responses

Merge pull request lightsail-network#228 from stellar/tamir/circleci

Fix circle ci config

Update changelog

0.7.0 (lightsail-network#203)

Fix build