Hftbacktest

**Fixed**
Fixed a problem where a snapshot exists only for one side. 56

**Fixed**
Removed the redundant loop used to find the frontmost timestamp.

**Added**
Added `PowerProbQueueModel`, `ProbQueueModel2`, `LogProbQueueModel2`, `ProbQueueModel3` and `PowerProbQueueModel3` to support different probability profiles.
42 Added a utility to convert continuous order book snapshot data into market-by-price data that can be processed by hftbacktest.

**Fixed**
44 Fix bugs regarding `PartialFillExchange`.
48 Fix order sequence error due to delays.

**Fixed**

Fix an issue where a proper start timestamp cannot be found.
Fix the mingled timestamp issue of Binance Historical Market Data converter.
Fix the issue where the response latency is not correctly calculated due to an incorrect if statement in `IntpOrderLatency`.

**Added**
An optional header argument has been added to Binance Historical Market Data converter in order to determine whether the first row is a header or not.

Unresolved Tardis data processing problem that causes hang in backtesting is fixed. It needs regenerating normalized data to resolve the problem.

Tardis data processing problem that causes hang in backtesting is fixed. It needs regenerating normalized data to resolve the problem.
Order rejection feature by exchange errors(e.g 5xx error in crypto exchanges) is added.