Break core code into modules

Author: kaidokert

.github/workflows/rust.yml

@@ -16,3 +16,9 @@ jobs:
       run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
+    - name: Run tests with zeroize
+      run: cargo test --verbose --features zeroize
+    - name: Run tests with use-unsafe
+      run: cargo test --verbose --features use-unsafe
+    - name: Run tests with all features
+      run: cargo test --verbose --all-features

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "fixed-bigint"
-version = "0.1.11"
+version = "0.1.12"
 authors = ["kaidokert <[email protected]>"]
 documentation = "https://docs.rs/fixed-bigint"
 edition = "2018"