fix: solve numpy dependency issue with hdbscan

setup.py

@@ -208,7 +208,7 @@ def setup_package():
             # Setuptools 18.0 properly handles Cython extensions.
             'setuptools>=18.0',
             'cython==0.28.2',
-            'numpy<=1.16.4',
+            'numpy==1.16.0',
             'biopython==1.73',
             'scipy<1.3.0',
             'matplotlib<3.0',
@@ -225,7 +225,7 @@ def setup_package():
             'future==0.17.1',
             'setuptools>=18.0',
             'cython==0.28.2',
-            'numpy<1.16',
+            'numpy==1.16.0',
             'matplotlib<3.0',
             'docutils>=0.3',
             'six>=1.10',