Rename features

crates.io doesn't like feature names encoded as strings, apparently.

.travis.yml

@@ -32,7 +32,7 @@ script:
  - cargo check --tests --examples
  - cargo test --lib --tests
  - cargo test --doc
- - cargo run --no-default-features --features rand-0.6 --example ed25519 > /dev/null
+ - cargo run --no-default-features --features rand-06 --example ed25519 > /dev/null
  - cargo clean --doc && cargo doc --no-deps && cargo deadlinks --dir target/doc
 
 deploy:

Cargo.toml

@@ -28,11 +28,11 @@ pwbox = { version = "0.1.4", default-features = false, features = ["rust-crypto"
 toml = "0.5.1"
 
 [features]
-default = ["rand-0.7"]
-"rand-0.6" = ["rand6", "rand6_chacha"]
-"rand-0.7" = ["rand", "rand_chacha"]
+default = ["rand-07"]
+rand-06 = ["rand6", "rand6_chacha"]
+rand-07 = ["rand", "rand_chacha"]
 
 [[example]]
 name = "ed25519"
 path = "examples/ed25519.rs"
-required-features = ["rand-0.6"]
+required-features = ["rand-06"]

src/lib.rs

@@ -102,9 +102,9 @@
 //! # Crate features
 //!
 //! The crate supports both `rand` v0.6 and v0.7 (the latter is used by default).
-//! To signal the version, specify a `rand-0.6` or `rand-0.7` feature (naturally, they are mutually
-//! exclusive). `rand-0.7` is on by default, so it is necessary to specify
-//! `default-features = false` if using `rand-0.6`.
+//! To signal the version, specify a `rand-06` or `rand-07` feature (naturally, they are mutually
+//! exclusive). `rand-07` is on by default, so it is necessary to specify
+//! `default-features = false` if using `rand-06`.
 //!
 //! [libsodium]: https://download.libsodium.org/doc/key_derivation
 //! [Blake2b]: https://tools.ietf.org/html/rfc7693
@@ -130,14 +130,14 @@ use clear_on_drop::ClearOnDrop;
 // and even this may not work (v0.7 may be used elsewhere).
 //
 // Older versions:
-#[cfg(feature = "rand-0.6")]
+#[cfg(feature = "rand-06")]
 use rand6::{AsByteSliceMut, CryptoRng, RngCore, SeedableRng};
-#[cfg(feature = "rand-0.6")]
+#[cfg(feature = "rand-06")]
 use rand6_chacha::ChaChaRng;
 // Newer versions:
-#[cfg(feature = "rand-0.7")]
+#[cfg(feature = "rand-07")]
 use rand::{AsByteSliceMut, CryptoRng, RngCore, SeedableRng};
-#[cfg(feature = "rand-0.7")]
+#[cfg(feature = "rand-07")]
 use rand_chacha::ChaChaRng;
 
 use std::fmt;