Update to Rust 1.54.0

.travis.yml

@@ -1,8 +1,13 @@
 language: rust
-# TODO: put stable and beta back in once slice_pattern lands in stable
 rust:
-  # - stable
-  # - beta
-  - nightly
+- stable
+- beta
+- nightly
 
 cache: cargo
+
+script:
+- cargo test --verbose
+- cargo build --features serde
+- cargo test --features std
+- cargo test --features unstable_ip

Cargo.toml

@@ -2,10 +2,15 @@
 name = "no-std-net"
 description = "Rust's std::net... without the 'std'."
 version = "0.5.0"
-authors = [ "M@ Dunlap <[email protected]>" ]
-categories = [ "embedded", "network-programming", "no-std" ]
+authors = ["M@ Dunlap <[email protected]>"]
+categories = [
+    "embedded",
+    "network-programming",
+    "no-std",
+]
 repository = "https://github.com/dunmatt/no-std-net"
 license = "MIT"
+readme = "README.md"
 
 [badges]
 maintenance = { status = "actively-developed" }
@@ -18,7 +23,9 @@ serde = { version = "^1", default-features = false, optional = true }
 serde_test = "^1"
 
 [features]
-default = [ ]
-
+# Makes the library act as a facade to std::net types
+std = []
+# Like `#![feature(ip)]`, see https://github.com/rust-lang/rust/issues/27709
+unstable_ip = []
 # Deprecated. Does nothing.
-i128 = [ ]
+i128 = []