Fixing interpolation error

In some spectra there's discrepancy between
the number of points in spectrum (NPT variable),
and real number of points (shape of array)

In this commit we decide that REAL NUMBER is the value we should care about

brukeropusreader/opus_data.py

@@ -7,7 +7,8 @@ class OpusData(dict):
         param_key = f"{spec_name} Data Parameter"
         fxv = self[param_key]["FXV"]
         lxv = self[param_key]["LXV"]
-        npt = self[param_key]["NPT"]
+        # NPT and REAL NUMBER OF POINTS may differ
+        npt = self[spec_name].shape[0]
         x_no_unit = np.linspace(fxv, lxv, npt)
         if wavenums:
             return x_no_unit

setup.py

@@ -3,12 +3,11 @@ from distutils.core import setup
 
 setup(
     name="brukeropusreader",
-    version="1.3.3",
+    version="1.3.4",
     description="Bruker OPUS File Reader",
     author="QED",
     author_email="brukeropusreader-dev@qed.ai",
     packages=["brukeropusreader"],
-    python_requires=">=3",
     install_requires=["numpy>=1.13.3", "scipy>=0.19.1"],
     license="GPLv3",
     url="https://github.com/qedsoftware/brukeropusreader",