add support for two cliff dates
add support for two cliff dates

one of the startups wants an unusual cliff schedule.

legalese-io/legalese-io.github.io,byte/legalese.github.io,byte/legalese.github.io,byte/legalese.github.io,legalese/legalese.com,legalese-io/legalese-io.github.io,byte/legalese.github.io,legalese/legalese.com,legalese/legalese.com,legalese-io/legalese-io.github.io,legalese-io/legalese-io.github.io,legalese/legalese.com