ted v. 1.3

a bunch of cool stuff in this release!

new features:

• path-specific settings e.g. [/my/special/project//core] or [C:\Users\Me\Documents//Javascript.keyboard]
• custom background shader!! see ted.cfg for an example
• :insert-text command, multi-line strings in ted.cfg

small fixes:

• fixed rust char literal highlighting
• byte literals + byte string literals in rust have better highlighting
• in rust, .into() no longer highlights the "." as a number
• byte/raw/f strings in python have better highlighting