allow more flexible requirements (#1035)

Author: JingqingZ

requirements/requirements.txt

@@ -1,10 +1,10 @@
-imageio==2.5.0
-numpy>=1.16,<1.17
-progressbar2==3.39.3
-requests==2.21.0
-scikit-learn==0.21.0
-scikit-image==0.15.0
-scipy==1.2.1
-wrapt==1.11.1
+imageio>=2.5.0
+numpy>=1.16
+progressbar2>=3.39.3
+requests>=2.21.0
+scikit-learn>=0.21.0
+scikit-image>=0.15.0
+scipy>=1.2.1
+wrapt>=1.11.1
 h5py>=2.9
 cloudpickle>=0.8.1

requirements/requirements_db.txt

@@ -1 +1 @@
-pymongo==3.8.0
+pymongo>=3.8.0

requirements/requirements_doc.txt

@@ -1,8 +1,8 @@
 flake8-docstrings>=1.3,<1.4
-pycodestyle==2.5.0
+pycodestyle>=2.5.0
 pydocstyle>=2.1,<3.1
 sphinx==2.0.1
 sphinx_rtd_theme>=0.4,<0.5
-wrapt==1.11.1
+wrapt>=1.11.1
 h5py>=2.9
 cloudpickle>=0.8.1

requirements/requirements_extra.txt

@@ -1,6 +1,6 @@
-opencv-python==4.1.0.25
+opencv-python>=4.1.0.25
 nltk>=3.3,<3.5
 matplotlib>=2.2,<3.1
-requests==2.21.0
-tqdm==4.31.1
-lxml==4.3.3
+requests>=2.21.0
+tqdm>=4.31.1
+lxml>=4.3.3

requirements/requirements_test.txt

@@ -1,9 +1,9 @@
 keras>=2.2,<2.3
-pycodestyle==2.5.0
+pycodestyle>=2.5.0
 pydocstyle>=2.1,<3.1
-pytest==4.5.0
+pytest>=4.5.0
 pytest-cache>=1.0,<1.1
-pytest-cov==2.7.1
-pytest-xdist==1.28.0
+pytest-cov>=2.7.1
+pytest-xdist>=1.28.0
 sphinx==2.0.1
-yapf==0.27.0
+yapf>=0.27.0