Merge pull request #10 from mutalyzer/biopython-version

Biopython version

setup.cfg

 [metadata]
 name = mutalyzer_backtranslate
-version = 0.1.3
+version = 0.1.4
 description = Functions for reverse translation.
 long_description = file: README.rst
 author = LUMC, Jeroen F.J. Laros
@@ -20,7 +20,7 @@ classifiers =
 [options]
 packages = find:
 install_requires =
-    biopython==1.76
+    biopython>=1.76
     python-Levenshtein==0.12.0
 tests_require =
     fake-open==0.0.1