* first commit, remote att types
* no more agg attestation proto
* regen mock
* only attestations
* proto
* att process
* fix att references
* more tests passing
* use att protos
* complete
* change visibility
* use gogoprotobu
* Remove error checking for type assertions on p2p messages. The code should fail earlier in the p2p layer. Also fixed format on some TODOs
* format TODO again
* Add a bit more tests for p2p stuff
* goimports on feed_mock
* remove unused import
* add mutex on top of p2p feeds map
* lock read too
* add concurrent write test and enable race detector
* restrict race detection to concurrent feed map write test
* gazelle fix
* increase ram and I/O in bazel's local_resources
* reverted local_resources changes
* address review comments
* do not disable sandboxing on travis
* address review comments
