support std::error::Error

included is mandataing a `description` method on `DecodeError`
implementors - already approximately required by the Debug and Display
anyway.

also include a StandardPartialDecoderError for incomplete decoders to
use. i expect that one of the last steps of a decoder's 1.0 release will
be to move away from this.

1 files changed, 7 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index cb49e90..7674eb8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,11 +15,17 @@ version = "0.0.5"
 "serde" = { version = "1.0", optional = true }
 "serde_derive" = { version = "1.0", optional = true }
 
+[dev-dependencies]
+"anyhow" = "*"
+"thiserror" = "*"
+
 [profile.release]
 lto = true
 
 [features]
-default = ["use-serde", "colors", "address-parse"]
+default = ["std", "use-serde", "colors", "address-parse"]
+
+std = []
 
 # enables the (optional) use of Serde for bounds on
 # Arch and Arch::Address