String literals are being parsed, compiled and printed, read more

Strings, due to their potentially large size, are stored outside of a
routine's code section, in the data section. To access the correct
string, you must read the jump index, then the real address from the
jump table - and extra layer of indirection will result in more flexible
data down the road, I hope.

Other changes include:

* Added string concat operator ..
* Added TOY_STRING_MAX_LENGTH
* Strings can't be created or concatenated longer than the max length
* The parser will display a warning if the bucket is too small for a
  string at max length, but it will continue
* Added TOY_BUCKET_IDEAL to correspend with max string length
* The bucket now allocates an address that is 4-byte aligned
* Fixed missing entries in the parser rule table
* Corrected some failing TOY_BITNESS tests

repl/main.c

@@ -168,7 +168,7 @@ static void errorAndExitCallback(const char* msg) {
 }
 
 //main file
-int main(int argc, const char* argv[]) {
+int main(int argc, const char* argv[]) { //TODO: this needs an interactive terminal mode
 	Toy_setPrintCallback(printCallback);
 	Toy_setErrorCallback(errorAndExitCallback);
 	Toy_setAssertFailureCallback(errorAndExitCallback);
@@ -218,7 +218,7 @@ int main(int argc, const char* argv[]) {
 		Toy_Parser parser;
 		Toy_bindParser(&parser, &lexer);
 
-		Toy_Bucket* bucket = Toy_allocateBucket(sizeof(Toy_Ast) * 32);
+		Toy_Bucket* bucket = Toy_allocateBucket(TOY_BUCKET_IDEAL);
 		Toy_Ast* ast = Toy_scanParser(&bucket, &parser);
 
 		Toy_Bytecode bc = Toy_compileBytecode(ast);