Clean up to make room for new standard library

stdlib/Boltfile

@@ -0,0 +1 @@
+

stdlib/either.bolt

@@ -0,0 +1,3 @@
+
+pub struct Either<L, R>;
+

stdlib/io.bolt

@@ -1,12 +1,5 @@
 
-pub struct String;
-
-pub struct Either<L, R> {
-  is_right: bool,
-  value: L | R,
-}
-
-mod io {
+mod IO {
 
   pub type Result<T> = Either<Error, T>;
 
@@ -36,5 +29,5 @@ mod io {
 
 }
 
-print("Hello, world!");
+// IO::print("Hello, world!");
 

stdlib/lang/bolt.bolt

@@ -1,5 +1,5 @@
 
-mod Bolt.Lang {
+mod Bolt::Lang {
 
   pub struct Pos {
     offset: Int,

stdlib/math.bolt

@@ -1,7 +1,32 @@
 
-newtype Int;
+pub struct i32;
+pub struct i64;
+pub struct isize;
+pub struct u32;
+pub struct u64;
+pub struct usize;
 
-pub fn fac(n: Int) -> Int {
+trait Num;
+
+fn (a: N) + (b: N) -> N where N: Num {
+  N::add(a, b)
+}
+
+fn (a: N) - (b: N) -> N where N: Num {
+  N::sub(a, b)
+}
+
+fn (a: N) / (b: N) -> N where N: Num {
+  N::div(a, b)
+}
+
+fn (a: N) * (b: N) -> N where N: Num {
+  N::mul(a, b)
+}
+
+// precedence a + b < a * b;
+
+pub fn fac(n: I) -> I where I: int {
   if n == 0 {
     return 1
   } else {
@@ -9,9 +34,3 @@ pub fn fac(n: Int) -> Int {
   }
 }
 
-fn (a: Int) + (b: Int) -> Int {
-  
-}
-
-precedence a + b < a * b;
-

stdlib/option.bolt

@@ -0,0 +1,4 @@
+
+pub struct Option<T>;
+
+

stdlib/string.bolt

@@ -0,0 +1,3 @@
+
+pub struct String;
+

stdlib/syntax.bolt

@@ -1,5 +0,0 @@
-
-import "lang/bolt" (
-  Identifier,
-  Syntax,
-);