- Added assume_no_enum() because the Err enum is used at least as often as [] for reporting fails.

- changed substring(a b) behavior from "b is the max length of the resulting string" to "b is the exclusive end index, unless it is negative, in which case its abs() value is the maximum length".
- fixed a bug in libs/path
- added the http_requests library, which can be used to make very basic GET requests
- fixed a bug in the gui library that would mess up button handling
- you can now escape comments using a backslash `\`: \// will turn into the literal //, \/* will turn into the literal /*. Useful for URLs (because comments work in string literals). Putting a backslash before a linebreak will also ignore that linebreak (useful in long string literals)

README.md

@@ -2,6 +2,17 @@
 
 Mers is an experimental programming language inspired by high-level and scripting languages, but with error handling inspired by rust.
 
+## WARNING
+
+If you use libraries, be aware that they run as a seperate process that might not exit with mers!
+This means that, after running a script 40-50 times (which can happen more quickly than you might realize),
+you might find 40-50 random processes just running and possibly maxing our your cpu.
+So if you use libraries (recommendation: don't, the implementation is pretty bad anyway. just use any other language), make sure to kill those processes once you're done
+until I figure out how to make that happen automatically.
+(I believe the issue happens when closing the window from the GUI library, which crashes mers, leaving the http library process running)
+
+(other than that, the language is pretty usable, i promise...)
+
 ## Features
 
 ### Multiple Types