chore(release): 1.2.0 (#30)

Bump 1.1.4 -> 1.2.0 across all release files (Cargo, pyproject, wasm,
conda, docs) and roll the CHANGELOG [Unreleased] section into [1.2.0].

Highlights: runtime CPU-feature dispatch (multiversion), broader wheel
coverage (linux aarch64 + musllinux + windows arm64), abi3 wheels,
Dynamic Time Warping, and indicator-specific exception types.

Cargo.toml

@@ -5,7 +5,7 @@ resolver = "2"
 
 [package]
 name = "ferro_ta"
-version = "1.1.4"
+version = "1.2.0"
 edition = "2021"
 description = "Rust-powered Python technical analysis library with a TA-Lib-compatible API"
 license = "MIT"
@@ -36,7 +36,7 @@ pyo3-log = "0.12"
 # this crate's own `simd` feature (below). Without this, core's default `simd`
 # would always be on and `--no-default-features` could never produce a true
 # pure-scalar build (used by the SIMD benchmark baseline).
-ferro_ta_core = { path = "crates/ferro_ta_core", version = "1.1.4", default-features = false, features = ["serde"] }
+ferro_ta_core = { path = "crates/ferro_ta_core", version = "1.2.0", default-features = false, features = ["serde"] }
 
 [dev-dependencies]
 criterion = { version = "0.8", features = ["html_reports"] }