gnu: cm: Update to 0.3.

* gnu/packages/algebra.scm (cm): Update to 0.3.
  [license]: Change to gpl3+.

gnu/packages/algebra.scm

@@ -67,7 +67,7 @@ multiplication routines such as Toom–Cook and the FFT.")
 (define-public cm
   (package
    (name "cm")
-   (version "0.2.1")
+   (version "0.3")
    (source (origin
             (method url-fetch)
             (uri (string-append
@@ -75,7 +75,7 @@ multiplication routines such as Toom–Cook and the FFT.")
                   version ".tar.gz"))
             (sha256
              (base32
-              "1r5dx5qy0ka2sq26n9jll9iy4sjqg0jp5r3jnbjhpgxvmj8jbhq8"))))
+              "1nf5kr0nqmhbzrsrinky18z0ighjpsmb5cr8zyg8jf04bfbyrfmc"))))
    (build-system gnu-build-system)
    (propagated-inputs
      `(("mpfrcx" ,mpfrcx)
@@ -89,7 +89,7 @@ imaginary quadratic number fields and of elliptic curves with complex
 multiplication via floating point approximations.  It consists of libraries
 that can be called from within a C program and of executable command
 line applications.")
-   (license license:gpl2+)
+   (license license:gpl3+)
    (home-page "http://cm.multiprecision.org/")))
 
 (define-public fplll