bug fixes and performance improvements

src/pipeline/mod.rs

@@ -0,0 +1,19 @@
+pub mod error;
+mod project_tree;
+mod source_loader;
+mod import_abs_path;
+mod split_name;
+mod import_resolution;
+pub mod file_loader;
+mod parse_layer;
+
+pub use parse_layer::parse_layer;
+pub use project_tree::{
+  ConstTree, ProjectExt, ProjectModule, ProjectTree, from_const_tree,
+  collect_consts, collect_rules,
+};
+// pub use file_loader::{Loaded, FileLoadingError, IOResult};
+// pub use error::{
+//   ErrorPosition, ModuleNotFound, NotExported, ParseErrorWithPath,
+//   ProjectError, TooManySupers, UnexpectedDirectory
+// };