Introductions for the Eth1.x research group

[adlerjohn]

1. John Adler
2. Solving the scalability problem
3. On the Eth 1.x front, optimistic rollup and improvements to the base chain for rollup schemes, which make state growth a non-issue in practice
   1. Multi-threaded data availability and data pre-processing (research) (first EIP of several)
   2. Integrating data availability proofs to get sharding scalability without sharding (research)