* adds ProofMetadata
* adds EPOCH_INTERVAL
* adds messageLog field
* adds updateLog, toEpoch, fromEpoch, getEpoch, compareTo
* adds unit test for toEpoch and fromEpoch
* adds unit test for Epoch comparison
* adds result codes for updateLog
* adds unit test for update log
* renames epoch related consts
* modifies updateLog with new return type and new logic of spam detection
* adds unit text for the modified updateLog
* changes max epoch gap type size
* splits updateLog into two procs isSpam and updateLog
* updates unittests
* fixes a bug, returns false when the message is not spam
* renames messageLog to nullifierLog
* renames isSpam to hasDuplicate
* updates the rln validator, adds comments
* adds appendRLNProof proc plus some code beatification
* unit test for validate message
* adds unhappy test to validateMessage unit test
* renames EPOCH_UNIT_SECONDS
* renames MAX_CLOCK_GAP_SECONDS
* WIP: integration test
* fixes compile errors
* sets a real epoch value
* updates on old unittests
* adds comments to the rln relay tests
* adds more comments
* makes rln import conditional
* adds todos
* adds more todos
* adds rln-relay mount process into chat2
* further todos
* logs contentTopic
* introduces rln relay configs
* changes default pubsub topic
* adds contentTopic config
* imports rln relay dependencies
* consolidates imports
* removes module identifier from ContentTopic
* adds contentTopic field
* adds contentTopic argument to mountRlnRelay calls
* appends rln proof to chat2 messages
* changes the default chat2 contentTopic
* adds missing content topic fields
* fixes a bug
* adds a new logic about empty content topics
* appends proof only when rln flag is active
* removes unnecessary todos
* fixes an indentation issue
* adds log messages
* verifies the proof against the concatenation of msg payload and content topic
* a bug fix
* WIP
* removes duplicate epoch time calculation
* converts echo to log
* invokes handler
* bug fix
* prints calculated epoch
* changes the format of printed epoch
* updates log levels
* logs the input buffer supplied to the generate_proof
* replaces echos with logs
* changes log level to trace
* resets the log level of chat2 to INFO
* upgrades log level to debug
* exports toRLNSignal and adds a doc string
* updates log level
* enables all test2
* removes an echo statement
* modifies a comment
* further updates on the log level
* a minor update
* invokes the spam handler when provided
* checks for payload version
* deletes a redundant check
* deletes a rendant check
* updates default rln-relay cht2 content topic
* adds a todo and log
* changes the case of testnet content topic
* removes a flaky check
* adds ProofMetadata
* adds EPOCH_INTERVAL
* adds messageLog field
* adds updateLog, toEpoch, fromEpoch, getEpoch, compareTo
* adds unit test for toEpoch and fromEpoch
* adds unit test for Epoch comparison
* adds result codes for updateLog
* adds unit test for update log
* renames epoch related consts
* modifies updateLog with new return type and new logic of spam detection
* adds unit text for the modified updateLog
* changes max epoch gap type size
* splits updateLog into two procs isSpam and updateLog
* updates unittests
* fixes a bug, returns false when the message is not spam
* renames messageLog to nullifierLog
* renames isSpam to hasDuplicate
* updates the rln validator, adds comments
* adds appendRLNProof proc plus some code beatification
* unit test for validate message
* adds unhappy test to validateMessage unit test
* renames EPOCH_UNIT_SECONDS
* renames MAX_CLOCK_GAP_SECONDS
* WIP: integration test
* fixes compile errors
* sets a real epoch value
* updates on old unittests
* adds comments to the rln relay tests
* adds more comments
* makes rln import conditional
* adds todos
* adds more todos
* adds rln-relay mount process into chat2
* further todos
* logs contentTopic
* introduces rln relay configs
* changes default pubsub topic
* adds contentTopic config
* imports rln relay dependencies
* consolidates imports
* removes module identifier from ContentTopic
* adds contentTopic field
* adds contentTopic argument to mountRlnRelay calls
* appends rln proof to chat2 messages
* changes the default chat2 contentTopic
* adds missing content topic fields
* fixes a bug
* adds a new logic about empty content topics
* appends proof only when rln flag is active
* removes unnecessary todos
* fixes an indentation issue
* adds log messages
* verifies the proof against the concatenation of msg payload and content topic
* a bug fix
* removes duplicate epoch time calculation
* updates log level to trace
* updates default rln-relay content topic
* adds support for empty content topics
* updates changelog
* changelog updates
* removes a commented code block
* updates addRLNRelayValidator string doc