initial preperation, very riugh functionality
Fixed lexing for floats, ranges and integers.
removed `alias` and `mime type` form description
added web url to description
added encoding, languages and emoji in visualise
fixed nested comments
defined keywords as class methods, added constants
include all unicode chars, not most elegant solution
fixed bug which overrides CSharp lexer
fixed unicode to match swift syntax guide.

Some of the characters are not in Syntax Guide but do work in Playgrounds and
Xcode. I've included Georgian an Japanese in samples. Emojis work fine though.
Add slim lexer
Objective-C: Add support for @import

Apple added the @import keyword to Objective-C in 2013 as part of the
introduction of modules.
Merge pull request #162 from ole/objc.import-keyword

Objective-C: Add support for @import
Elixir: Lex bitwise operators
Elixir: Lex map and structs
Elixir: Lex regexp sigil

It's not %r// anymore. It's ~r//
Elixir: Lex & operator
Merge pull request #163 from splattael/elixir

Elixir's lexer updates
whitespace fixes
kludge to get previews working for now