Add QKeras as a package dependency

Jenkinsfile

@@ -1,7 +1,7 @@
 pipeline {
   agent {
     docker {
-      image 'vivado-el7:1'
+      image 'vivado-el7:2'
       args  '-v /data/Xilinx:/data/Xilinx'
     }
   }
@@ -14,9 +14,8 @@ pipeline {
       steps {
         dir(path: 'test') {
           sh '''#!/bin/bash --login
-              conda activate hls4ml-py36
+              conda activate hls4ml-py37
               pip install tensorflow
-              pip install git+git://github.com/google/[email protected]#egg=qkeras
               pip install -U ../ --user
               ./convert-keras-models.sh -x -f keras-models.txt
               pip uninstall hls4ml -y'''

docs/setup.rst

@@ -18,6 +18,9 @@ http://www.h5py.org
 
 https://pypi.python.org/pypi/PyYAML 
 
+**QKeras**\ : for working with quantized models 
+
+https://github.com/google/qkeras
 
 **PyTorch**\ : for reading in Torch models
 

setup.cfg

@@ -1,6 +1,9 @@
 [metadata]
 description-file = README.md
 
+[options]
+python_requires = >=3.7
+
 [options.entry_points]
 pytest_randomly.random_seeder =
     hls4ml = hls4ml:reseed

setup.py

@@ -33,7 +33,8 @@ def get_version(rel_path):
           'h5py',
           'onnx>=1.4.0',
           'calmjs.parse',
-          'tabulate'
+          'tabulate',
+          'qkeras',
       ],
       extras_require={
         'profiling': [