preparing to re-add sim library
Squashed 'sim/' content from commit 3a28289

git-subtree-dir: sim
git-subtree-split: 3a282892b051517690ed22df28a4b4cdef6def4e
Merge commit '49af851a85d791349fb2004c218a7410d9b70884' as 'sim'
Adding game sim files to live in gh-pages branch!