Base definition for the MultiPortGraph (#116)

* Base definition for the MultiPortGraph

* Apply review comments

Some doctests require the iterators PR coming next

Author: aborgna-q

Cargo.toml

@@ -39,6 +39,7 @@ smol_str = {version = "0.1.24", features = ["serde"]}
 derive_more = "0.99.17"
 itertools = "0.10.5"
 html-escape = "0.2.13"
+bitvec = { version = "1.0.1", features = ["serde"] }
 
 [features]
 pyo3 = ["dep:pyo3"]

src/hugr.rs

@@ -1,15 +1,16 @@
 //! The Hugr data structure, and its basic component handles.
 
 mod hugrmut;
-pub mod view;
 
+pub mod multiportgraph;
 pub mod serialize;
 pub mod validate;
+pub mod view;
 
-use derive_more::From;
-pub use hugrmut::HugrMut;
-pub use validate::ValidationError;
+pub use self::hugrmut::HugrMut;
+pub use self::validate::ValidationError;
 
+use derive_more::From;
 use portgraph::dot::{hier_graph_dot_string_with, DotEdgeStyle};
 use portgraph::{Hierarchy, PortGraph, UnmanagedDenseMap};
 use thiserror::Error;