v1.1 FoV and no free attacks/heals

First post 7drl update! TLDR: Vision system, melee attacks and healing no longer free, 

First thing I did for this update is finish the graphics for things you collect to hopefully be able to replace the gem like sprite with unique images for the 100+ items, turns out I didn't really like how that looked so instead I made picking things up briefly show the new graphics instead of entirely replacing the old image.

One major issue with the old version was that I basically never wanted to use spells so after some thinking and testing did few things to address that. Both melee attacking and healing are now effectively spells so all your options aside from just moving, waiting and leaping are more equally costly, of course that means just moving away is usually the best option but I'm generally fine with that as long as situations where you're unable to do that you consider all of the spells you have. Another thing I did is make casting a spell you gain from a circle free as long as you're standing on the circle(that works even when you haven't fully gained a spell meaning you can get preview for what you'd get later and prioritize circles accordingly).

Somewhat minor but kind of important thing is that being forced to pass a turn is now communicated much better, you now get a message and the game waits for you to press something before moving on to the next turn instead of just doing that instantly(I might want to replace the message with very obvious visual indicators at some point). To make better use of that some enemies can now stun or poison you.

The combat changes made the need for enemies to not see you through walls more urgent so decided to tackle adding a more proper FoV system now instead of doing a more minor update before adding that like I was initially planning to do.

Notable things about the FoV system:

• I've mentioned I originally wanted to add soundmap of sorts that'd show directions and rough distances of various sounds you heard but at least for now just showing whatever it is that you hear making sounds seems good enough.
• Being able to tell that someone is right behind you without looking was something I was so unsure about adding that I made it toggleable, it's convenient but paranoia that lack of it can give is nice too. At the time I hadn't made attacks mark the attacker as heard so I might change it to be off by default later. 
• Turning around is free which kind of makes being able to only see in front of you pointless limitation but I plan to fix that by adding TU(time unit) system which makes turning around and some other actions take a fraction of a turn.
• Random idea I had and implemented is having the items you collect and use for spells allow you to see near them. It's quite interesting and seems to do a lot.
• Figuring out how exactly stuff you aren't currently seeing should look took some fiddling, not sure I'm happy with it but it works.

Not sure how much the issue was just from me playing more to test stuff but in my playtests I tended to only get a bit beyond reaching the main circle room before I stopped playing so decided to try making the map smaller and reducing number of collectables and so far I'm quite happy with that and almost finish most of the games I play.

To make finding the last few collectables easier room exits now indicate if there are any in neighbouring room through both a visual cue and a number that shows up in the UI when standing on a exit. Also to make interacting with circles easier to understand there's now numbers indicating how much stuff they need and how much you've put into them.

All that changes how things work a lot, so I tried to make it so that adding ?v7DRL to the url(like this), would turn most of the new stuff off, but so far it's not working for me despite it working when playing from disk.