[PatchWarp] Calcium imaging data for across-session registration

Example mean and max-projection images from an early and late 2-photon calcium imaging sessions. The data was collected from the retrosplenial cortex of a camk2-tTA::tetO-GCaMP6s transgenic mouse. This data set can be used to run 'patchwarp_across_sessions_demo.m' in the github repository for PatchWarp (https://github.com/ryhattori/PatchWarp).