The thirdPartyV2 folder replaces the older thirdParty folder. This folder was created to
mitigate regression across the product when upgrading commonly used 3rd-party libraries
to newer versions. Pages that have not yet been upgraded to use the newer versions will
continue to use libraries in the thirdParty folder until the transition is complete.
Once all pages that use an old library are upgraded, the old library should be removed
from our repo and from the official build node.

Rules:

- Only 3rd-party libraries should be placed in this folder.
- Only recent versions of libraries should be placed in this folder.
- Avoid making custom changes to 3rd-party libraries that will need to be reapplied when
  the library is upgraded. If you absolutely must do this, create a "modified" folder
  under this folder, place your library there, and include a readme file detailing your
  changes.
