feat(ToolBox\IQFeed): prevent unordered ticks to be processed (QuantC…

…onnect#4884)

closes QuantConnect#4649

Add decimal places as parameters to get dividends with arbitrary prec…

…ision (QuantConnect#4883)

* Add decimal places as parameters to get dividends with arbitrary precision

 
Also, increase precision when generating strings from factor files rows.

* Add xml documentation entries for new optional arguments.

Adds CustomBuyingPowerModelAlgorithm (QuantConnect#4824)

* Adds CustomBuyingPowerModelAlgorithm

This algorithms is an example on how to implement a custom buying power model.

In this particular case, it shows how to override `HasSufficientBuyingPowerForOrder` in order to place orders without sufficient buying power according to the default model.

* Upgrades CustomModelsAlgorithm to Include CustomBuyingPowerModel

The custom buying power model overrides `HasSufficientBuyingPowerForOrderResult` but it doesn't change the trades and, consequently, the regression statistics.

Allow account currency to be overridden by the algorithm (QuantConnec…

…t#4856)

* Allow account currency to be overridden by the algorithm

* Fix failing unit test

* Address review

- Revert removal of call check in SecurityPortfolioManager.SetAccountCurrency
- Revert changes to unit tests
- IBrokerage.AccountBaseCurrency now defaults to null
- BrokerageSetupHandler will not change the algorithm's account currency if the brokerage returns null, allowing the algorithm to call SetAccountCurrency in Initialize

Fix Toolbox tickers parsing (QuantConnect#4876)

- Fix ToolBox tickers parsing, adding unit test.

Make StartDate relative to Algorithm TimeZone in Live mode (QuantConn…

…ect#4871)

Create QuantConnect-Platform-2.0.0.yaml

Initial commit of QuantConnect Platform Yaml.

Ignore composer ThreadAbort Exception (QuantConnect#4870)

- Composer inner task will not log exception if it's of type Thread
  abort, which means we are shutting down.

Standardize API.cs to use JSON Objects (QuantConnect#4868)

* Standardize API to use JSON Objects

* Address review

bug-QuantConnect#4846-Fail on restart investing after liquidation on …

…MaximumDrawdownPercentPortfolio.py (QuantConnect#4847)

* Fail on restart investing after liquidation

I added a line so that the trailing high value could be rebalanced and the investment process won't be stop by high value always more than current value by drawdown percent.

* Update MaximumDrawdownPercentPortfolio.py

* Fix for MaximumDrawdownPercentPortfolio

- Fix C# MaximumDrawdownPercentPortfolio to reset portfolio value after
  liquidation. Only reset once we have actually adjusted some targets.
  Updating regression algorithms.

Co-authored-by: Martin Molinero <martin.molinero1@gmail.com>