Omspy

Improvements
* `VOrder` can now accept string as order types like MARKET/LIMIT in addition to `OrderType` Enum
* `Kotak` broker exchange_timestamp in orders would datetime objects instead of pendulum objects

Features
* `ReplicaBroker` class added to simulation to replicate order fills based on real broker data
Improvements
* `print` replaced with `logging` for zerodha broker

Features
* New broker `Neo` added

Improvements to `FakeBroker` module
Features
* user can provide a custom response to all methods in `FakeBroker` if you pass a response keyword argument
* `side` to be converted to enum even if passed as a BUY or SELL string
* fake methods added for `orders` and `trades`

Fixes
* kotak broker `instrument_master` extra columns bug fixed - broker added extra columns for a few instruments to track market surveillance

Improvements to the VirtualBroker module
Features
Following features added to `VirtualBroker`
* `VirtualBroker` methods to match `FakeBroker` methods
* Users added, orders can be placed and managed based on user
* Order status could be fetched based on Status
* delay attribute added to broker
* Ticker model improved with ohlc and orderbook methods

Improvements
* `iterate_method` made generic
* `Ticker` model now moved to models