2.0.0 - Major objects overhaul, fixes, + full market support

 - Overhauled all objects in `privex.steemengine.objects` - converted to dataclasses using `DictDataClass`,
   with various dynamic properties allowing querying related data via `SteemEngineToken`.

   Every single object was refactored, so I'm not going to go into details on each class that was refactored.

 - Added several new objects to `privex.steemengine.objects` - as dataclasses using `DictDataClass`.

 - Added `SteemEngineToken.native_coin` and `SteemEngineToken.native_token`, to track the native market symbol
   of the network, e.g. `SWAP.HIVE` / `STEEMP`.

 - Added new method `SteemEngineToken.place_order` which allows placing orders on the Steem/Hive Engine market,
   returning the `SEPlacedOrder` dictclass object, which allows easily referencing the Steem/Hive Engine
   transaction object, and the trades which fulfilled the order.

 - Rebased exceptions in `privex.steemengine.exceptions` to use base class `SteemEngineException`

 - Added new exceptions `NoResults` and `NoSteemEngineInstance`

 - Added `r_cache` caching to various methods in `SteemEngineToken` for data which doesn't change often.

 - Changed default indexes to `[]` (empty list) for query methods in SteemEngineToken, as a lot of indexes
   do not work on HiveEngine.

 - Refactored the base functionality of `order_history` into `query_order_history` to simplify
   non-symbol queries in other methods

 - Added new methods `SteemEngineToken.find_fulfilled_sells`, `SteemEngineToken.find_fulfilled_buys`, and
   `SteemEngineToken.find_fulfilled` which query using the new `sellTxId` / `buyTxId` keys

 - Some improvements to the unit tests

 - Various other small changes

.gitignore

@@ -4,6 +4,7 @@ __pycache__
 .idea
 .vscode
 .pytest_cache
+.env
 
 # PyPi build files
 build

privex/steemengine/__init__.py

@@ -2,7 +2,7 @@
 import sys
 from privex.steemengine.SteemEngineToken import SteemEngineToken
 from privex.steemengine.SteemEngineHistory import SteemEngineHistory
-from privex.steemengine.objects import Token, TokenMetadata, SEBalance, SETransaction, ObjBase
+from privex.steemengine.objects import *
 
 name = 'steemengine'
 

privex/steemengine/exceptions.py

@@ -37,17 +37,26 @@
 """
 
 
-class TokenNotFound(BaseException):
+class SteemEngineException(Exception):
+    """Base exception for all :mod:`privex.steemengine` exceptions"""
+
+
+class TokenNotFound(SteemEngineException):
     """The token requested doesn't exist"""
-    pass
 
 
-class AccountNotFound(BaseException):
+class AccountNotFound(SteemEngineException):
     """The Steem account requested doesn't exist"""
-    pass
 
 
-class NotEnoughBalance(BaseException):
+class NotEnoughBalance(SteemEngineException):
     """Not enough token/steem/sbd balance for this operation"""
-    pass
+
+
+class NoResults(SteemEngineException):
+    """The server returned an empty response such as ``None`` ..."""
+
+
+class NoSteemEngineInstance(SteemEngineException):
+    """Raised when :attr:`._seng_instance` on a :class:`.SteemEngineInstanceInject` based object is ``None``"""