crate: prepare for version 0.3.0-rc.2

CHANGELOG.md

@@ -13,6 +13,7 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - Structure `MachineInfo` for non-machine environment, e.g. cross-architecture emulator
 - Builder structure for instance based RustSBI framework
 - Implement RustSBI traits for their references
+- Extensive documents for hypervisors, emulators and machine environments using RustSBI
 - Feature `legacy` to gate SBI legacy extension
 - Expose `init_*` functions on instance based RustSBI implementation
 - LEGACY_CLEAR_IPI implemented

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "rustsbi"
 description = "Minimal RISC-V's SBI implementation library in Rust"
-version = "0.3.0-rc.1"
+version = "0.3.0-rc.2"
 authors = [
     "Luo Jia <[email protected]>",
     "Campbell He <[email protected]>",