feat!: split into non-default features fs and network

Closes kemitix/kxio#11

Cargo.toml

@@ -8,6 +8,10 @@ license = "MIT"
 repository = "https://git.kemitix.net/kemitix/kxio"
 exclude = [".cargo_home"]
 
+[features]
+fs = []
+network = []
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]

src/lib.rs

@@ -1,2 +1,4 @@
+#[cfg(feature = "fs")]
 pub mod filesystem;
+#[cfg(feature = "network")]
 pub mod network;