Move the lexer to its own sibillexer module

Lots of failing tests right now, unfortunately. :(

sibil/src/lexer/token.rs

@@ -1,35 +0,0 @@
-/* token.rs
- * Eryn Wells <eryn@erynwells.me>
- */
-
-use types::{Bool, Char, Number};
-
-#[derive(Debug, PartialEq)]
-pub enum Token {
-    Boolean(Bool),
-    Character(Char),
-    Comment(String),
-    Dot,
-    Id(String),
-    LeftParen,
-    LeftVectorParen,
-    Number(Number),
-    Quote,
-    RightParen,
-    String(String),
-}
-
-/// A Lex is a Token extracted from a specific position in an input. It contains useful information about the token's
-/// place.
-#[derive(Debug)]
-pub struct Lex {
-    pub token: Token,
-    pub line: usize,
-    pub offset: usize,
-}
-
-impl Lex {
-    pub fn new(token: Token, line: usize, offset: usize) -> Lex {
-        Lex { token: token, line: line, offset: offset }
-    }
-}