Finished section 3.5
Fixed the ver for the plugin.
Trying to remove a useless file.
Still trying
added to ignores list
Completed section 3.6.3.  Now. the app shows the state of the chat slider in the url, using the history url component.
I'm in a somewhat broken state in section 3.6.4 of the book.  I now have a white screen.  Not sure why.  Will continue tomorrow.