MAINT: split bundled license into a separate file

This is done partly to help GitHub correctly identify the LICENSE as MIT

Author: grlee77

LICENSE

@@ -18,15 +18,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
-
-
-The PyWavelets repository and source distributions bundle some code that is
-adapted from compatibly licensed projects. We list these here.
-
-Name: NumPy
-Files:  pywt/_pytesttester.py
-License: 3-clause BSD
-
-Name: SciPy
-Files:  setup.py, util/*
-License: 3-clause BSD

LICENSES_bundled.txt

@@ -0,0 +1,10 @@
+The PyWavelets repository and source distributions bundle some code that is
+adapted from compatibly licensed projects. We list these here.
+
+Name: NumPy
+Files:  pywt/_pytesttester.py
+License: 3-clause BSD
+
+Name: SciPy
+Files:  setup.py, util/*
+License: 3-clause BSD