Add changelog

in preparation for release of v0.2

CHANGELOG.md

@@ -0,0 +1,29 @@
+# Change Log
+
+## [0.2](https://github.com/formatc1702/WireViz/tree/v0.2) (2020-XX-XX)
+
+### Backward incompatible changes
+
+- Change names of connector attributes ([#77](https://github.com/formatc1702/WireViz/issues/77))
+- Remove ferrules as a separate connector type ([#78](https://github.com/formatc1702/WireViz/issues/78))
+- Change the way loops are defined ([#79](https://github.com/formatc1702/WireViz/issues/79))
+
+### New features
+- Add bidirectional AWG/mm2 conversion ([#41](https://github.com/formatc1702/WireViz/pull/41))
+- Add support for part numbers ([#11](https://github.com/formatc1702/WireViz/pull/11))
+- Add support for multicolored wires ([#17](https://github.com/formatc1702/WireViz/pull/17))
+- Add ability to export data directly to other programs ([#55](https://github.com/formatc1702/WireViz/pull/55))
+- Add support for line breaks in various fields ([#63](https://github.com/formatc1702/WireViz/issues/63))
+- Allow using connector pin names to define connections ([#72](https://github.com/formatc1702/WireViz/issues/72))
+- Make defining connection sets easier and more flexible ([#67](https://github.com/formatc1702/WireViz/issues/67))
+
+### Misc. fixes
+
+- Improve BOM generation
+- Add various input sanity checks
+
+###
+
+## [0.1](https://github.com/formatc1702/WireViz/tree/v0.1) (2020-06-29)
+
+- Initial release

README.md

@@ -110,7 +110,13 @@ If you would like to rebuild all of the included demos, examples and tutorials,
 
 ```cd src/wireviz
 ./build_examples.py
+
 ```
+
+## Changelog
+
+See [CHANGELOG.md](CHANGELOG.md)
+
 ## Status
 
 This is very much a [work in progress](https://github.com/formatc1702/WireViz/projects/1). Source code, API, syntax and functionality may change wildly at any time.
@@ -123,4 +129,4 @@ Ubuntu 18.04 LTS users in particular may need to separately install Python 3.7 o
 
 ## License
 
-GNU GPLv3
+[GPL-3.0](LICENSE)