Cubic-Spline: Import maths feature for rust_decimal to apply square roots needed for Cholesky decomposition

Author: yfnaji

Cargo.toml

@@ -96,7 +96,7 @@ plotly = "0.10.0"           # https://docs.rs/plotly/latest/plotly/
 rand = "0.8.5"              # https://docs.rs/rand/latest/rand/
 rand_distr = "0.4.3"        # https://docs.rs/rand_distr/latest/rand_distr/
 rayon = "1.9.0"             # https://docs.rs/rayon/latest/rayon/
-rust_decimal = "1.34.3"     # https://docs.rs/rust_decimal/latest/rust_decimal/
+rust_decimal = { version = "1.34.3", features = ["maths"] }     # https://docs.rs/rust_decimal/latest/rust_decimal/
 statrs = "0.17.1"           # https://docs.rs/statrs/latest/statrs/
 thiserror = "1.0.57"        # https://docs.rs/thiserror/latest/thiserror/
 
@@ -116,7 +116,7 @@ polars = { version = "0.44.0", features = ["docs-selection"] }
 serde = { version = "1.0.213", features = ["derive"] }
 
 # https://docs.rs/crate/pyo3/latest
-pyo3 = {version = "0.26.0", features = ["extension-module", "time"]}
+pyo3 = {version = "0.26.0", features = ["time"]}
 
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 ## PYTHON BINDINGS