Just a post to mention that the next release is still being worked on. I got a little burned out on the project, between getting sick again, finding issues with NPC's following you, and getting a new project of the ground at work. But I'm back at it.
Currently the dungeon order is being edited. Players could appearently (to my shock) lock themselves out off finishing the prison through key usage, so that definatly still needs fixing. Not sure how long it will take since tiling, scenes and so on might all need editing depending on the solution I go with.
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EDIT: And here is an overview of the latest progress made.
0.19.61 (28 mei 2018)
* Fixed funny bug allowing endless NPC spawning
* Did more bugfixing in regards to NPC respawn mechanics
0.19.62 (1 juni 2018)
* Added Florine to Underwater Prison
* Finally made it work with all the various other mechanics: NPC's can now also follow you to other Gamemaker rooms (=different floors/dungeons/etc) uninterrupted.
0.19.63 (2 juni 2018)
* Enemies can now interact with pressure plates (but only turned on for NPC's)
* Tweaked dungeon map some more
0.19.64 (9 juni 2018)
* Fixed character state when instantly changing to opposite direction while stopping to push pushable object
* Added extra intro scene with Murray
* Fixed: Murray not always laughing correctly during some scenes
0.19.65 (10 juni 2018)
* Connected dungeon to overworld
* Adjusted default screen transition to better account for following NPC's (so they get stuck less in closing doors)
* Fixed NPC walking into you if you walk in tiny bursts for a little bit
0.19.66 (17 juni 2018)
* Made more progress setting up Florine's scenes.
* Discovering more issues with NPC respawning that will need to be fixed
0.19.67 (29 juni 2018)
* Fixed a number of issues found with NPC respawning
0.19.68 (1 juli 2018)
* Rewrote Florine dialoog
* Fixed last (?) issues with NPC respawning
* Fixed Underwater endscenes not triggering based on NPC positioning
0.19.69 (7 juli 2018)
* Fixed errors when suddenly switching into the push state (from a walk state without a shield)
* Further tweaked Florine conversations
* Fixed error when a third textbox instantly follows others but has a different display speed.
0.19.70 (8 juli 2018)
* Tweaked breakable walls in prison
* Edited content of most chests in prison
* Retiled a number of rooms slightly
* Tweaked some drops and room layouts to hint at bomb usage at places
* Populated dungeon with containers
* Moved conditional doors, locked doors and keys around, changing the dungeon order a bit