Feature requests

[exoclam]

• Testing (unit testing; also, completeness/occurrence rate testing)
• Hill radius spacing (@ssagear)
• Mass sampling
• Radius sampling
• Tutorials/use cases
• Change name of Star object to System object

[exoclam]

• Previously, occurrence evolution models affected the intact fraction of planetary systems (probability of having a compact multi), but not the host fraction. Now, they affect the host fraction but not the intact fraction (we assume 18% among planet hosts). Eventually, we want to generalize to allow for both at the same time.