This page provides a record of edits and changes made to this book since its initial publication in the BC Open Textbook Collection. Whenever edits or updates are made, we make the required changes in the text and provide a record and description of those changes here. If the change is minor, the version number increases by 0.1. However, if the edits involve substantial updates, the version number goes up to the next full number. The files on our website always reflect the most recent version, including the Print on Demand copy.
If you find an error in this book, please fill out the Report an Open Textbook Error form. If the book was produced in partnership with BCcampus, we will contact the author, make the necessary changes, and replace all file types as soon as possible. If we did not produce the book, we will make note of the error on this page and contact the original producer of the textbook. Once we receive the updated files, this Versioning History page will be updated to reflect the edits made.
| Version | Date | Change | Details |
|---|---|---|---|
| 1.1 | April 14, 2015 | Book added to the BC Open Textbook Collection. | |
| 2.1 | October 24, 2016 | Entire book revised for accessibility. | Alt tags and long descriptions added to images. Tables reformatted for accessibility. Link text edited to be descriptive. |
| 2.2 | March 14, 2017 | Name spelled wrong. | In section 2.6, Nayland, Susan has been corrected to say Neylan, Susan. |
| 2.3 | August 30, 2018 | Minor errors corrected. |
Thank you to Alan Gordon at the University of Guelph for these corrections. |
| 2.4 | June 4, 2019 | Updated the book’s theme. | The styles of this book have been updated, which may affect the page numbers of the PDF and print copy. |