This package includes every official multi-day heist days as standalone heists. Most are fully functional and will run no problem. There's still a couple of things to look out for:
Train Trade (Framing Frame Day 2) will not have any paintings for now. Will include soon. Estimation date: Unknown.
Rats Day 2 Standalone by Dr. Newbie has been included, but has been renamed to "Code For Meth Standalone"
Engine Problem (Big Oil) uses the same coding as every other standalone day included in this package. No extra assets are included.
Boat Load (Watchdogs Day 2, both day and night) includes 6 coke bags by default. But you will start out dropping out of Alex's helicopter every time.
Art Gallery (Framing Frame Day 1) will only have 6 paintings.
All variants of Watchdogs and Big Oil are included. Both day and night.
Credits:
Dr. Nolegs/Dr_Newbie: Swing Vote Standalone
Dr_Newbie: Format for standalone days.
Dr_Newbie/Myself: Implementing the remaining standalone days .