* do not use batch for SaveAttestations
* use snappy compression
* Encode / decode everything with snappy
* Add snappy migration path
* batch is probably fine...
* fix test
* gofmt
* Merge branch 'master' of github.com:prysmaticlabs/prysm into remove-batch-attestations
* add sanity check
* remove that thing
* gaz
* Merge branch 'master' of github.com:prysmaticlabs/prysm into remove-batch-attestations
* checkpoint progress
* feature flag and test
* return true if feature flag is not on
* add lint msg
* rollback tx if failure
* Revert validator/BUILD.bazel
* retrieve attestations by block root as well
* add beacon block root filter
* rem err unimpl
* add changes to list atts filter proto
* utilize the new filter attributes
* add filter types
* utilize filters in the api server impl
* tests for filter
* tests pass
* filter test done
* fix test by using head fetcher instead
* gaz
* no panic
* use new ethapis commit
* elim panic
* res panic
* ensure proto compatibility
* fixed broken test
* generate archive proto
* archived committee info
* archive methods added to iface definition
* impl
* update iface
* proto comments
* implement first method
* committee info
* save committee info
* participation checked in
* fully implemented
* tests
* test defs
* db impls done
* new interface methods
* support proposer slashings
* add in the new buckets
* all crud for propoer slashings
* attester slashings complete
* all slashings crud done
* right comment
* deposit contract tests pass
* delete out of scope methods
* conform old beacon DB
* comment
* deprecations
* pass lint
* Update deposit_contract.go
* new interface methods
* support proposer slashings
* add in the new buckets
* all crud for propoer slashings
* attester slashings complete
* all slashings crud done
* right comment
* delete out of scope methods
* conform old beacon DB
* include new getter for block
* create block filters from indices
* give every block index a unique bucket
* construct block indices by bucket mmap
* almost done save for the block filters
* include block filters, need a few more small touches for fetching the proper indices by bucket
* full functionality to filter by parent root
* tests pass when using the same logic as attestations
* todo
* proper todo formatting
* first minimum slot range filter
* slot range filters pass
* more filter criteria passing
* tests passing
* add todos
* all block tests pass and work
* rem fmt
* range retrieval test
* fixed test conditions
* instantiate the other buckets
* simplify bucket lookups
* deprecate non map code
* revamp to remove old index prefixes
* create indices from data
* create indices from data
* fetch block roots by slot range
* better abstractions
* simpler abstractions
* roots rename
* comment
* preston feedback
* allow blocks without parent root
* begin indices approach
* use shard bucket
* continue the indices approach
* eliminate the filter checkers in favor of the single loop of root lookups
* elim extraneous println statement
* continue the indices approach
* intersection for multiple filter types works, but is complex, verbose, and nearly unreadable
* remove unused code
* table drive tests for byte slice intersections
* include all table driven tests
* gazelle imports
* better abstractions
* better comments
* variadic approach working
* transform to variadic
* comments
* comments
* separate bucket for indices for faster range scans
* attestation key as hash tree root of data and different indices buckets
* test pass
* default behavior without filter
* appropriate filter criterion errors if criterion does not apply to type
* better abstractions and prune keys on deletion
* better naming
* fix build
* fix build
* rem extraneous code
