* set limiter to first level mock data list and updated unit tests
* address nested slices length limit
* minor fix recording file and update unit tests
* minor updates on unit tests
* re-record mock files and minor fix on the unit tests ti adapt the mock data change
* improve http recording limit value and fix issues with mock data in binance
* added MockDataSliceLimit in request items and resolve minor unit test issues
* resolve missed conflict
* rename mock variables, resolve unit test issues, and other updates
* minor fix to CheckJSON and update unit tests
* minor unit test fix
* further optimization on mock CheckJSON method, unit tests, and re-record poloniex
* common and recording unit tests fix
* minor linter issues fix
* unit tests format fix
* fix miscellaneous error
* unit tests fix and minor docs update
* re-record and reduce mock file size
* indentation fix
* minor assertion test fix
* reverted log.Printf line in live testing
* rename variables
* update NewVCRServer unit test
* replace string comparison with *net.OpError check
* restructur net error test
* exchanges/mock: Remove redundant error assertion message in TestNewVCRServer
---------
Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>
* exchanges: Improve TestMain usage
* exchanges: Further cleanups
* exchanges/kucoin: update TestProcessOrderbook to use test context
* refactor: rename SetRunning to SetRunningURL for clarity across exchanges
