asynchronous rob authored Jan 20, 2017 and Arkadiy Paronyan committed Jan 20, 2017

* remove old lint silencer

* dispatch requests only to peers with higher TD

* dynamic target for sync rounds

* use round pivots instead of frames, fix test

* fix total difficulty calculation for test client

* fix broken reorg algorithm

* fork test, fix ancestor search

asynchronous rob authored Jan 11, 2017 and Arkadiy Paronyan committed Jan 11, 2017

* make on_connect/disconnect public

* free flow params constructor

* Shared ownership of LES handlers

* light provider impl for test client

* skeleton for testing light sync

* have test_client use actual genesis

* fix underflow in provider

* test harnesses for lightsync

* fix tests

* fix test failure caused by test_client changes