Changes in api and upwards

- Removed out-of-stack error reporting
- Revised module system to match previous Orchid system
- Errors are now in a Vec everywhere
- Implemented atoms and lexer
- Started implementation of line parser
- Tree is now ephemeral to avoid copying Atoms held inside
- Moved numbers into std and the shared parser into base
- Started implementation of Commands

Cargo.lock

@@ -476,6 +476,7 @@ dependencies = [
  "hashbrown 0.14.5",
  "itertools",
  "lazy_static",
+ "never",
  "orchid-api",
  "orchid-api-traits",
  "orchid-base",
@@ -487,12 +488,14 @@ name = "orchid-std"
 version = "0.1.0"
 dependencies = [
  "itertools",
+ "never",
  "once_cell",
  "orchid-api",
  "orchid-api-derive",
  "orchid-api-traits",
  "orchid-base",
  "orchid-extension",
+ "ordered-float",
 ]
 
 [[package]]
@@ -501,9 +504,9 @@ version = "0.1.0"
 
 [[package]]
 name = "ordered-float"
-version = "4.2.0"
+version = "4.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a76df7075c7d4d01fdcb46c912dd17fba5b60c78ea480b475f2b6ab6f666584e"
+checksum = "19ff2cf528c6c03d9ed653d6c4ce1dc0582dc4af309790ad92f07c1cd551b0be"
 dependencies = [
  "num-traits",
 ]