Merge pull request #179 from data-8/changelog

Add changelog

Author: SamLau95

CHANGELOG.md

@@ -0,0 +1,14 @@
+`datascience` ChangeLog
+=======================
+
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased]
+### Added
+- This CHANGELOG file!
+- Docs are now up on [readthedocs][rtd].
+- [`util.table_apply` function][table_apply]
+
+[rtd]: http://datascience.readthedocs.org/en/latest/index.html
+[table_apply]: https://github.com/data-8/datascience/blob/f7c11b5132299dab0c75a5862cdab9c5b619c7e5/datascience/util.py#L62-L82