* implemented all the merkle func signatures
* branch indices complete
* check for index out of range in generating merkle proof
* completed full tests for sparse merkle trie impl
* lint
* formatting
* gazelle
* commentary
* ivan comments
* fmt
* get rid of the deposit trie
* recalculate trie when eth1 data changes
* default data response recalculates tree
* update merkle trie to use raw bytes
* use the new verify merkle root func
* builds
* if default data response historical deposits are empty, return the deposit root at the contract at the time
* work on trie
* trying again with more logging
* keep track of merkle trie indices, use correct big int ops
* use uint for merkle idx
* add todo
* update ticker correctly
* fix config and remove unnecessary logs
* readd plus one fix
* clarify some details
* weird imports spacing
* gazelle, lint
* fix tests using the new deposit trie
* builds but tests still fail
* rpc tests
* lint
* tests pass
* bazel lint
* rem commented block
* revert att slot fix
* preston comments
* comments
* fix build
* address last comment
* use counter
* imports
* implemented all the merkle func signatures
* branch indices complete
* check for index out of range in generating merkle proof
* completed full tests for sparse merkle trie impl
* lint
* formatting
* gazelle
* commentary
* ivan comments
* fmt
* bench tests
* change old comment
* goimport
* partition travis
