Reformat changelog (#11)

Author: Jesse

CHANGELOG.md

@@ -1,51 +1,59 @@
-v2.0.2 - May 4, 2022
+# Release History
+
+## 2.x.x (Unreleased)
+
+- Reorganised code to use Poetry for dependency management.
+## 2.0.2 (2022-05-04)
 - Better exception handling in automatic connection close
 
-v2.0.1 - April 21, 2022
+## 2.0.1 (2022-04-21)
 - Fixed Pandas dependency in setup.cfg to be >= 1.2.0
 
-v2.0.0 - April 19, 2022
+## 2.0.0 (2022-04-19)
 - Initial stable release of V2
 - Added better support for complex types, so that in Databricks runtime 10.3+, Arrays, Maps and Structs will get 
   deserialized as lists, lists of tuples and dicts, respectively.
 - Changed the name of the metadata arg to http_headers
 
-v2.0.b2 - April 4, 2022
+## 2.0.b2 (2022-04-04)
 - Change import of collections.Iterable to collections.abc.Iterable to make the library compatible with Python 3.10
 - Fixed bug with .tables method so that .tables works as expected with Unity-Catalog enabled endpoints
 
-v2.0.0b1 - March 4, 2022
+## 2.0.0b1 (2022-03-04)
 - Fix packaging issue (dependencies were not being installed properly)
 - Fetching timestamp results will now return aware instead of naive timestamps
 - The client will now default to using simplified error messages
 
-v2.0.0b - February 8, 2022
+## 2.0.0b (2022-02-08)
 - Initial beta release of V2. V2 is an internal re-write of large parts of the connector to use Databricks edge features. All public APIs from V1 remain.
 - Added Unity Catalog support (pass catalog and / or  schema key word args to the .connect method to select initial schema and catalog)
 
-**Note**: The code for versions prior to `v2.0.0b` is not contained in this repository.
+---
+
+**Note**: The code for versions prior to `v2.0.0b` is not contained in this repository. The below entries are included for reference only.
 
-v1.0.0 - January 20, 2022
+---
+## 1.0.0 (2022-01-20)
 - Add operations for retrieving metadata
 - Add the ability to access columns by name on result rows
 - Add the ability to provide configuration settings on connect
 
-v0.9.4 - January 10, 2022
+## 0.9.4 (2022-01-10)
 - Improved logging and error messages.
 
-v0.9.3 - December 8, 2021
+## 0.9.3 (2021-12-08)
 - Add retries for 429 and 503 HTTP responses.
 
-v0.9.2 - December 2, 2021
+## 0.9.2 (2021-12-02)
 - (Bug fix) Increased Thrift requirement from 0.10.0 to 0.13.0 as 0.10.0 was in fact incompatible
-- (Bug fix) Fixed error message after query execution failed - SQLSTATE and Error message were misplaced
+- (Bug fix) Fixed error message after query execution failed -SQLSTATE and Error message were misplaced
 
-v0.9.1 - Sept 1, 2021
+## 0.9.1 (2021-09-01)
 - Public Preview release, Experimental tag removed
 - minor updates in internal build/packaging
 - no functional changes
 
-v0.9.0 - Aug 4, 2021
+## 0.9.0 (2021-08-04)
 - initial (Experimental) release of pyhive-forked connector
 - Python DBAPI 2.0 (PEP-0249), thrift based
 - see docs for more info: https://docs.databricks.com/dev-tools/python-sql-connector.html