circumstance is a helper package for pomp. Most notably, it provides tools for performing pomp calculations in parallel. See the manual for details.
Installation:
Install circumstance from the Github repository by executing the following in an R session:
install.packages("circumstance",repos="https://kingaa.github.io/")
On Windows and MacOS systems, this will cause a precompiled version of the latest release to be installed.
You can also download the latest release and install it locally as you would any R package.