v1.3.1: Keeper can close streams, bug fix

This release fixes a bug in v1.3 that caused the contracts to lock funds. It includes the keeper can close streams feature.

v1.3: Keep watch over streamers, Support for WBTC, USDC

• Closes: #3, #5
• Support for tokens with any decimal precision like WBTC, USDC
• Implements closeStream method that allows the keeper to close streams iff they have less than 8 hours of balance left to stream
• Requires that streamers have more than 8 hours of streamable funds when opening a stream to Ricochet
• Includes 04-Keeper repo with the Ricochet Keeper, a series of workflows run using Apache Airflow

v1.2: Fix IDA and fee calculation issues (#6)

* sushiswap oracle, tellor fallback, events

* update tests and readme

* eth->dai exchange testing

* check IDA shares before distribute

* misc. fixes for deploy

* Added notes for v2 spec

* calculate fee and distribute the actualAmount

* tests for fee and v1.2 deploy config

* script for setting rate tolerance

* support verification

Events, Better Oracle Setup, ETHx/DAIx Support

⚠️ This does invert the oracle for ETH/DAI to work using Tellors DAI/ETH price.

Initial Release

This is the first version of Ricochet deployed to Polygon.

Contract Address: 0x387af38C133056a0744FB6e823CdB459AE3c5a1f