Upgrade to latest Zig, remove dependency on patched version of Zig (#96)

* Prepare to upgrade zig

* zig fmt

* AllocGate

* Update data_url.zig

* wip

* few files

* just headers now?

* I think everything works?

* Update mimalloc

* Update hash_map.zig

* Perf improvements to compensate for Allocgate

* Bump

* 📷

* Update bun.lockb

* Less branching

* [js parser] Slightly reduce memory usage

* Update js_parser.zig

* WIP remove unused

* [JS parser] WIP support for `with` keyword

* Remove more dead code

* Fix all the build errors!

* cleanup

* Move `network_thread` up

* Bump peechy

* Update README.md

src/string_builder.zig

@@ -1,4 +1,4 @@
-usingnamespace @import("string_types.zig");
+const string = @import("string_types.zig").string;
 const Allocator = @import("std").mem.Allocator;
 const assert = @import("std").debug.assert;
 const copy = @import("std").mem.copy;
@@ -13,7 +13,7 @@ pub fn count(this: *StringBuilder, slice: string) void {
     this.cap += slice.len;
 }
 
-pub fn allocate(this: *StringBuilder, allocator: *Allocator) !void {
+pub fn allocate(this: *StringBuilder, allocator: Allocator) !void {
     var slice = try allocator.alloc(u8, this.cap);
     this.ptr = slice.ptr;
     this.len = 0;