Allow mixed letters and numbers in currencies
Add potential missing error handlers
Fix orderbook reset on reconnect
[TASK] update release notes
[TASK] bump version to 0.8.2-rc1
Deprecate account_tx map/reduce/filter
Emit server with subscription events
Fix requestLedger arguments
Merge branch 'release' into develop
[DOC] update release notes
[TASK] bump verison to 0.8.2-rc2
Update docs/GUIDES.md
Merge pull request #172 from booxood/modify-docs-guides-md

Update docs/GUIDES.md
[TASK] bump version to 0.8.2