prepare for 0.3 release

CHANGELOG.md

@@ -1,3 +1,36 @@
+## [0.3.0]
+
+An enormous number of breaking API changes, too many to list, almost the entire
+API has been rethought.
+
+The credit goes mostly to others for the release, @Bale001, @Aaron1011,
+@dragazo, and especially @moulins.
+
+### Release Highlights
+- New `Arena` API that does not require macros and instead uses a `Rootable`
+  trait and HRTBs for lifetime projection.
+- Methods on `Arena` to directly mutate the root type and map the root from one
+  type to another.
+- A new API for 'static roots that are held in smart pointers
+  (`DynamicRootSet`).
+- `Gc` pointers can now point to DSTs, and there is an `unsize!` macro for
+  unsizing coercions to replace the unstable `Unsize` trait.
+- Weak pointers!
+- `GcCell` has been replaced by explicit public lock types held within `Gc`
+  pointers with safe ways of mutating them.
+- Field projection on held lock types to allow for separate locks held within a
+  single `Gc` pointer to be safely mutated.
+- Unsafe `Gc` pointer coercions to compatible pointee types.
+- Soundly get references to `Gc` types with `&'gc` lifetime.
+- More ergonomic `Mutation` and `Collection` context types.
+- *Tons* of correctness and soundness fixes.
+
+This release also **completely drops** the `gc-sequence` combinator crate.
+Because of other API changes, anything you could do with `gc-sequence` before
+can almost certainly be expressed better either using the new 'static root API
+or with the new map API. See [this comment](https:// github.com/kyren/ gc-arena/
+pull/50#issuecomment-1538421347) for a bit more info.
+
 ## [0.2.2]
 - No changes, fixing a release snafu with cargo-release
 

src/gc-arena-derive/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gc-arena-derive"
-version = "0.2.2"
+version = "0.3.0"
 authors = ["kyren <[email protected]>"]
 edition = "2018"
 license = "MIT"

src/gc-arena/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gc-arena"
-version = "0.2.2"
+version = "0.3.0"
 authors = ["kyren <[email protected]>"]
 edition = "2018"
 license = "MIT"
@@ -13,7 +13,7 @@ default = ["std"]
 std = []
 
 [dependencies]
-gc-arena-derive = { path = "../gc-arena-derive", version = "0.2.2"}
+gc-arena-derive = { path = "../gc-arena-derive", version = "0.3.0"}
 sptr = "0.3.2"
 
 [dev-dependencies]