release: 0.2.7

Version bump plus a doc sweep: the benchmark tables in README and
docs/OPTIMIZATIONS.md were still from before the typed calling convention,
OPTIMIZATIONS listed BEGIN loop promotion as not started, and the
subroutine-threading section of docs/WAFER.md described the memory ABI as
the only one.

crates/web/Cargo.toml

@@ -12,7 +12,7 @@ workspace = true
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-wafer-core = { path = "../core", version = "0.2.6", default-features = false, features = ["crypto"] }
+wafer-core = { path = "../core", version = "0.2.7", default-features = false, features = ["crypto"] }
 wasm-bindgen = "0.2"
 js-sys = "0.3"
 send_wrapper = { workspace = true }