Rollup merge of rust-lang#55285 - integer32llc:release-notes-improvem…

…ents, r=Aaronepower

Do some copy editing on the release notes

I was reading through the release notes to find something and noticed
some small grammatical and consistency issues.

I'm happy to revert any of these changes if folks disagree with them!

RELEASES.md

@@ -4,34 +4,34 @@ Version 1.30.0 (2018-10-25)
 Language
 --------
 - [Procedural macros are now available.][52081] These kinds of macros allow for
-  more powerful code generation, there is a [new chapter available][proc-macros]
-  in Rust Programming Language book that goes further in depth.
+  more powerful code generation. There is a [new chapter available][proc-macros]
+  in the Rust Programming Language book that goes further in depth.
 - [You can now use keywords as identifiers using the raw identifiers
-  syntax (`r#`).][53236] e.g. `let r#for = true;`
+  syntax (`r#`),][53236] e.g. `let r#for = true;`
 - [Using anonymous parameters in traits is now deprecated with a warning and
   will be a hard error in the 2018 edition.][53272]
 - [You can now use `crate` in paths.][54404] This allows you to refer to the
-  crate root in the path. e.g. `use crate::foo;` refers to `foo` in `src/lib.rs`.
-- [Using a external crate now no longer requires being prefixed with `::`.][54404]
-  e.g. previously using a external crate in a module without a use statement
-  required `let json = ::serde_json::from_str(foo);` can now be written
+  crate root in the path, e.g. `use crate::foo;` refers to `foo` in `src/lib.rs`.
+- [Using a external crate no longer requires being prefixed with `::`.][54404]
+  Previously, using a external crate in a module without a use statement
+  required `let json = ::serde_json::from_str(foo);` but can now be written
   as `let json = serde_json::from_str(foo);`.
 - [You can now apply the `#[used]` attribute to static items to prevent the
-  compiler from optimising them away even if they appear to be unused.][51363]
+  compiler from optimising them away, even if they appear to be unused,][51363]
   e.g. `#[used] static FOO: u32 = 1;`
 - [You can now import and reexport macros from other crates with the `use`
   syntax.][50911] Macros exported with `#[macro_export]` are now placed into
   the root module of the crate. If your macro relies on calling other local
-  macros it is recommended to export with the
-  `#[macro_export(local_inner_macros)]` attribute so that users won't have to
-  import those macros.
-- [`mod.rs` files are now optional.][54146] Previously if you had a `foo` module
+  macros, it is recommended to export with the
+  `#[macro_export(local_inner_macros)]` attribute so users won't have to import
+  those macros.
+- [`mod.rs` files are now optional.][54146] Previously, if you had a `foo` module
   with a `bar` submodule, you would have `src/foo/mod.rs` and `src/foo/bar.rs`.
   Now you can have `src/foo.rs` and `src/foo/bar.rs` to achieve the same effect.
 - [You can now catch visibility keywords (e.g. `pub`, `pub(crate)`) in macros
   using the `vis` specifier.][53370]
-- [Non-macro attributes now allow all forms of literals not just
-  strings.][53044] e.g. Previously you would write `#[attr("true")]` you can now
+- [Non-macro attributes now allow all forms of literals, not just
+  strings.][53044] Previously, you would write `#[attr("true")]`, and you can now
   write `#[attr(true)]`.
 - [You can now specify a function to handle a panic in the Rust runtime with the
   `#[panic_handler]` attribute.][51366]
@@ -54,9 +54,9 @@ Stabilized APIs
 - [`Ipv6Addr::UNSPECIFIED`]
 - [`Iterator::find_map`]
 
-  The following methods are a replacement methods for `trim_left`, `trim_right`,
-  `trim_left_matches`, and `trim_right_matches`. Which will be deprecated
-  in 1.33.0.
+  The following methods are replacement methods for `trim_left`, `trim_right`,
+  `trim_left_matches`, and `trim_right_matches`, which will be deprecated
+  in 1.33.0:
 - [`str::trim_end_matches`]
 - [`str::trim_end`]
 - [`str::trim_start_matches`]
@@ -76,12 +76,12 @@ Misc
 ----
 - [`rustdoc` allows you to specify what edition to treat your code as with the
   `--edition` option.][54057]
-- [`rustdoc` now has the `--color` (Specify whether to output color) and
-  `--error-format` (Specify error format e.g. `json`) options.][53003]
+- [`rustdoc` now has the `--color` (specify whether to output color) and
+  `--error-format` (specify error format, e.g. `json`) options.][53003]
 - [We now distribute a `rust-gdbgui` script that invokes `gdbgui` with Rust
   debug symbols.][53774]
 - [Attributes from Rust tools such as `rustfmt` or `clippy` are now
-  available.][53459] e.g. `#[rustfmt::skip]` will skip formatting the next item.
+  available,][53459] e.g. `#[rustfmt::skip]` will skip formatting the next item.
 
 [50911]: https://github.com/rust-lang/rust/pull/50911/
 [51363]: https://github.com/rust-lang/rust/pull/51363/
@@ -153,7 +153,7 @@ Compiler
 
 Libraries
 ---------
-- [`Once::call_once` now no longer requires `Once` to be `'static`.][52239]
+- [`Once::call_once` no longer requires `Once` to be `'static`.][52239]
 - [`BuildHasherDefault` now implements `PartialEq` and `Eq`.][52402]
 - [`Box<CStr>`, `Box<OsStr>`, and `Box<Path>` now implement `Clone`.][51912]
 - [Implemented `PartialEq<&str>` for `OsString` and `PartialEq<OsString>`
@@ -169,10 +169,10 @@ Stabilized APIs
 
 Cargo
 -----
-- [Cargo can silently fix some bad lockfiles ][cargo/5831] You can use
-  `--locked` to disable this behaviour.
+- [Cargo can silently fix some bad lockfiles.][cargo/5831] You can use
+  `--locked` to disable this behavior.
 - [`cargo-install` will now allow you to cross compile an install
-  using `--target`][cargo/5614]
+  using `--target`.][cargo/5614]
 - [Added the `cargo-fix` subcommand to automatically move project code from
   2015 edition to 2018.][cargo/5723]
 - [`cargo doc` can now optionally document private types using the
@@ -184,15 +184,15 @@ Misc
   the specified level to that level.][52354] For example `--cap-lints warn`
   will demote `deny` and `forbid` lints to `warn`.
 - [`rustc` and `rustdoc` will now have the exit code of `1` if compilation
-  fails, and `101` if there is a panic.][52197]
+  fails and `101` if there is a panic.][52197]
 - [A preview of clippy has been made available through rustup.][51122]
-  You can install the preview with `rustup component add clippy-preview`
+  You can install the preview with `rustup component add clippy-preview`.
 
 Compatibility Notes
 -------------------
 - [`str::{slice_unchecked, slice_unchecked_mut}` are now deprecated.][51807]
   Use `str::get_unchecked(begin..end)` instead.
-- [`std::env::home_dir` is now deprecated for its unintuitive behaviour.][51656]
+- [`std::env::home_dir` is now deprecated for its unintuitive behavior.][51656]
   Consider using the `home_dir` function from
   https://crates.io/crates/dirs instead.
 - [`rustc` will no longer silently ignore invalid data in target spec.][52330]
@@ -432,7 +432,7 @@ Language
   be used as an identifier.
 - [The dyn syntax is now available.][49968] This syntax is equivalent to the
   bare `Trait` syntax, and should make it clearer when being used in tandem with
-  `impl Trait`. Since it is equivalent to the following syntax:
+  `impl Trait` because it is equivalent to the following syntax:
   `&Trait == &dyn Trait`, `&mut Trait == &mut dyn Trait`, and
   `Box<Trait> == Box<dyn Trait>`.
 - [Attributes on generic parameters such as types and lifetimes are
@@ -495,10 +495,10 @@ Cargo
   a different directory than `target` for placing compilation artifacts.
 - [Cargo will be adding automatic target inference for binaries, benchmarks,
   examples, and tests in the Rust 2018 edition.][cargo/5335] If your project specifies
-  specific targets e.g. using `[[bin]]` and have other binaries in locations
+  specific targets, e.g. using `[[bin]]`, and have other binaries in locations
   where cargo would infer a binary, Cargo will produce a warning. You can
-  disable this feature ahead of time by setting any of the following `autobins`,
-  `autobenches`, `autoexamples`, `autotests` to false.
+  disable this feature ahead of time by setting any of the following to false:
+  `autobins`, `autobenches`, `autoexamples`, `autotests`.
 - [Cargo will now cache compiler information.][cargo/5359] This can be disabled by
   setting `CARGO_CACHE_RUSTC_INFO=0` in your environment.
 
@@ -514,8 +514,8 @@ Compatibility Notes
   work.][49896] e.g. `::core::prelude::v1::StrExt::is_empty("")` will not
   compile, `"".is_empty()` will still compile.
 - [`Debug` output on `atomic::{AtomicBool, AtomicIsize, AtomicPtr, AtomicUsize}`
-  will only print the inner type.][48553] e.g.
-  `print!("{:?}", AtomicBool::new(true))` will print `true`
+  will only print the inner type.][48553] E.g.
+  `print!("{:?}", AtomicBool::new(true))` will print `true`,
   not `AtomicBool(true)`.
 - [The maximum number for `repr(align(N))` is now 2²⁹.][50378] Previously you
   could enter higher numbers but they were not supported by LLVM. Up to 512MB
@@ -578,7 +578,7 @@ Version 1.26.2 (2018-06-05)
 Compatibility Notes
 -------------------
 
-- [The borrow checker was fixed to avoid unsoundness when using match ergonomics][51117]
+- [The borrow checker was fixed to avoid unsoundness when using match ergonomics.][51117]
 
 [51117]: https://github.com/rust-lang/rust/issues/51117
 
@@ -589,18 +589,18 @@ Version 1.26.1 (2018-05-29)
 Tools
 -----
 
-- [RLS now works on Windows][50646]
-- [Rustfmt stopped badly formatting text in some cases][rustfmt/2695]
+- [RLS now works on Windows.][50646]
+- [Rustfmt stopped badly formatting text in some cases.][rustfmt/2695]
 
 
 Compatibility Notes
 --------
 
 - [`fn main() -> impl Trait` no longer works for non-Termination
-  trait][50656]
+  trait.][50656]
   This reverts an accidental stabilization.
-- [`NaN > NaN` no longer returns true in const-fn contexts][50812]
-- [Prohibit using turbofish for `impl Trait` in method arguments][50950]
+- [`NaN > NaN` no longer returns true in const-fn contexts.][50812]
+- [Prohibit using turbofish for `impl Trait` in method arguments.][50950]
 
 [50646]: https://github.com/rust-lang/rust/issues/50646
 [50656]: https://github.com/rust-lang/rust/pull/50656
@@ -616,18 +616,18 @@ Language
 - [Closures now implement `Copy` and/or `Clone` if all captured variables
   implement either or both traits.][49299]
 - [The inclusive range syntax e.g. `for x in 0..=10` is now stable.][47813]
-- [The `'_` lifetime is now stable. The underscore lifetime can be used anywhere where a
+- [The `'_` lifetime is now stable. The underscore lifetime can be used anywhere a
   lifetime can be elided.][49458]
 - [`impl Trait` is now stable allowing you to have abstract types in returns
-   or in function parameters.][49255] e.g. `fn foo() -> impl Iterator<Item=u8>` or
+   or in function parameters.][49255] E.g. `fn foo() -> impl Iterator<Item=u8>` or
   `fn open(path: impl AsRef<Path>)`.
 - [Pattern matching will now automatically apply dereferences.][49394]
 - [128-bit integers in the form of `u128` and `i128` are now stable.][49101]
 - [`main` can now return `Result<(), E: Debug>`][49162] in addition to `()`.
 - [A lot of operations are now available in a const context.][46882] E.g. You
   can now index into constant arrays, reference and dereference into constants,
-  and use Tuple struct constructors.
-- [Fixed entry slice patterns are now stable.][48516] e.g.
+  and use tuple struct constructors.
+- [Fixed entry slice patterns are now stable.][48516] E.g.
   ```rust
   let points = [1, 2, 3, 4];
   match points {
@@ -1052,7 +1052,7 @@ Language
 Compiler
 --------
 - [Enabled `TrapUnreachable` in LLVM which should mitigate the impact of
-  undefined behaviour.][45920]
+  undefined behavior.][45920]
 - [rustc now suggests renaming import if names clash.][45660]
 - [Display errors/warnings correctly when there are zero-width or
   wide characters.][45711]