Renemed all variables to fit into a namespace

Basically, all Toy varaibles, functions, etc. are prepended with "Toy_",
and macros are prepended with "TOY_". This is to reduce namespace
pollution, which was an issue pointed out to be - blame @GyroVorbis.

I've also bumped the minor version number - theoretically I should bump
the major number, but I'm not quite ready for 1.0 yet.

source/toy_lexer.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include "toy_common.h"
-#include "token_types.h"
+#include "toy_token_types.h"
 
 //lexers are bound to a string of code, and return a single token every time scan is called
 typedef struct {
@@ -9,18 +9,18 @@ typedef struct {
 	int start; //start of the token
 	int current; //current position of the lexer
 	int line; //track this for error handling
-} Lexer;
+} Toy_Lexer;
 
 //tokens are intermediaries between lexers and parsers
 typedef struct {
-	TokenType type;
+	Toy_TokenType type;
 	char* lexeme;
 	int length;
 	int line;
-} Token;
+} Toy_Token;
 
-TOY_API void initLexer(Lexer* lexer, char* source);
-Token scanLexer(Lexer* lexer);
+TOY_API void Toy_initLexer(Toy_Lexer* lexer, char* source);
+Toy_Token Toy_scanLexer(Toy_Lexer* lexer);
 
 //for debugging
-void printToken(Token* token);
+void Toy_printToken(Toy_Token* token);