Updated to week 6 

We got a big bunch of update for this one!

VISUAL UPDATE

- new and updated UI 
- updated sprite: Ritcher, Katarina, Wolfgang
- Added new NPCs
- brand new background CG
- new thumbnails
- brand new overworld visuals
- new locations 
- new ending CGs 

MECHANIC UPDATE 

- removing hint system in favor of skill checks & crafting 'evidences'
- improved stress mechanic; everytime you hit max stress, there will be a permanent skill penalty
- improved skill distribution system; gain more skill point from an activity