Merge fixes (additional)

- Fixed up the unittests in the `Parser` (and disabled some thing we can't access due to not have access to it via a given `Parser`)
- Fixed imports in dependency.d and parser.d

source/tlang/compiler/typecheck/core.d

@@ -3,7 +3,7 @@ module tlang.compiler.typecheck.core;
 import tlang.compiler.symbols.check;
 import tlang.compiler.symbols.data;
 import std.conv : to, ConvException;
-import std.string;
+import std.string : split, cmp, format;
 import std.stdio;
 import tlang.misc.logging;
 import tlang.compiler.parsing.core;

source/tlang/compiler/typecheck/dependency/core.d

@@ -3,7 +3,7 @@ module tlang.compiler.typecheck.dependency.core;
 import tlang.compiler.symbols.check;
 import tlang.compiler.symbols.data;
 import std.conv : to;
-import std.string;
+import std.string : cmp;
 import std.stdio;
 import tlang.misc.logging;
 import tlang.compiler.parsing.core;