New version of Carl's crosstalk blog post based on April 3 master.

[cdhowe]

trafficstars

I grabbed my post and created this new branch which uses an up to date master branch as of April 3. I've also removed all the code highlighting of the package name crosstalk in the post. CSS doesn't seem to have been fixed though.

[apreshill]

I finally isolated the problem here with crosstalk. It brings it bootstrap if you use:

• [x] checkboxes
• [x] select
• [x] bscols (predictably!)

But not:

• [ ] sliders

[apreshill]

We've just switched our production branch to main, I'll do a new PR to that branch.