Update requirement.txt with module versions (#32)

requirements.txt

@@ -1,17 +1,17 @@
-click
-numpy
-scipy
-seaborn
-matplotlib>=3.3.3
-configparser
-ete3
-pandas
-sklearn
-PyQt5
-biopython>=1.75
-coloredlogs>=10.0
+click==8.0.1
+numpy==1.21.2
+scipy==1.7.1
+seaborn==0.11.2
+matplotlib==3.4.3
+configparser==5.0.2
+ete3==3.1.2
+pandas==1.3.2
+scikit-learn==0.24.2
+PyQt5==5.15.2
+biopython==1.79
+coloredlogs==15.0.1
 fastcluster==1.1.25
-plumbum>=1.6.7
-progressbar2>=3.39
+plumbum==1.7.0
+progressbar2==3.53.1
 joblib==0.11
 bokeh==1.4.0