Added test to check for consistency of all_pairs, all_currencies, and keys of max_digits, min_orders.
Added test to check for consistency of all_pairs, all_currencies, and keys of max_digits, min_orders.

zku/btce-api,blorenz/btce-api,alanmcintyre/btce-api,lromanov/tidex-api,CodeReclaimers/btce-api