* adds open interest to exchanges
* ADDS TESTING YEAH
* New endpoints, BTSE, RPCS, cached
* slight design change, begin gateio
You will need to get cached for
each exchange that supports it
* gateio, huobi, rpc
* fix up kraken, cache retrieval
* okx, gateio
* finalising all implementations and tests
* definitely my final ever commit on this
* Well, well, well
* final v2
* quick fix of bug
* test coverage, assert notempty, test helper
Added a new testhelper for currency
management because its very annoying
in a parallel test setting which wastes
so much space otherwise
* minimises REST requests for Open Interest
* types.Number merge misses
* Minimises Kraken REST calls
* len change, value -> pointer receiver
* further fixup
* fixes gateio, batch calculates open interest
* single gateio, lint const fixes
* rejig and more thorough oi for huobi
* formatting expansion
* minor fix for handling expiring contracts
* rm unused Binance strings
* add bybit support, fix bybit issues
* oopsie doopsie, dont look at my whoopsie
* Fix issue, remove feature
* move an irrelevant function for the pr
* mini bybit upgrades
* fixes cli request bug
b71bf1f3d1