created requirements.txt (#72)

* created requirements.txt

* adapt github workflow

* add dependencies in github workflow?

I really have no idea, why it is not working now, because it literally
tells me in one execution that it doesnt need to install cython and in
the next line it cannot load it...

* revert changes

adding the dependency keyword, simply broke the pip workflow, I think.
Bc afterwards, github wouldnt do the workflow anymore...

* requirements in setup.pywq

* fix typo

* require wheel?

---------

Co-authored-by: Patrick Quoika <[email protected]>

.github/workflows/python.yml

@@ -27,7 +27,7 @@ jobs:
       run: sudo apt-get install -y libfftw3-dev && pip install Cython
 
     - name: Build
-      run: pip install .
+      run: pip install -r requirements.txt; pip install .
       working-directory: ${{ env.working-directory }}
 
     #TODO: Run Tests

package/requirements.txt

@@ -0,0 +1,2 @@
+Cython
+wheel

package/setup.py

@@ -23,7 +23,7 @@
         description = "Calculate the entropy of a given set of data, using the fftw3 library.",
         author = "Johannes Kraml",
         author_email="[email protected]",
-
+        install_requires=["Cython"],
         py_modules=['xentropy.dihedrals', 'xentropy.kde', 'xentropy.internal.constants', 'xentropy.xentropy',
             'xentropy.reweighting','xentropy.internal.resolution', 
             'xentropy.internal.pre_post_processing'],