Use openblas instead

src/kernel/exponential.rs

@@ -62,7 +62,7 @@ impl Kernel for Exponential {
 
 #[cfg(test)]
 mod tests {
-    extern crate intel_mkl_src;
+    extern crate blas_src;
 
     use approx::assert_abs_diff_eq;
     use rand::{distributions::Standard, thread_rng, Rng};