Redesign Into derive macro

CHANGELOG.md

@@ -30,6 +30,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - The `DebugCustom` derive is renamed to just `Debug` (gated now under a separate
   `debug` feature), and its semantics were changed to be a superset of `std` variant
   of `Debug`.
+- The `From` derive now uses `#[from(<types>)]` instead of `#[from(types(<types>))]`
+  and ignores field type itself.
+- The `Into` derive now uses `#[into(<types>)]` instead of `#[into(types(<types>))]`
+  and ignores field type itself.
 
 ### New features
 

Cargo.toml

@@ -30,6 +30,7 @@ derive_more-impl = { version = "=0.99.17", path = "impl" }
 
 [dev-dependencies]
 rustversion = "1.0"
+static_assertions = "1.1"
 trybuild = "1.0.56"
 
 [badges]
@@ -219,7 +220,7 @@ required-features = ["unwrap"]
 [[test]]
 name = "compile_fail"
 path = "tests/compile_fail/mod.rs"
-required-features = ["debug", "display"]
+required-features = ["debug", "display", "from", "into"]
 
 [[test]]
 name = "no_std"

impl/doc/debug.md

@@ -1,7 +1,7 @@
 # What `#[derive(Debug)]` generates
 
 This derive macro is a clever superset of `Debug` from standard library. Additional features include:
-- not imposing redudant trait bounds;
+- not imposing redundant trait bounds;
 - `#[debug(skip)]` attribute to skip formatting struct field or enum variant;
 - `#[debug("...", args...)]` to specify custom formatting for a particular struct or enum variant field;
 - `#[debug(bounds(...))]` to impose additional custom trait bounds.