refactor: New cli for labpdfproc

doc/source/examples/example-data/CeO2_635um_zscan_200umSlit_chanClose_exported.xy

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doc/source/index.rst

@@ -13,7 +13,7 @@ diffpy.labpdfproc - Tools for processing x-ray powder diffraction data from labo
 Authors
 =======
 
-diffpy.labpdfproc is developed by Billinge Group
+diffpy.labpdfproc is developed by Yucong Chen, Till Schertenleib, Caden Myers, the Billinge Group
 and its community contributors.
 
 For a detailed list of contributors see

news/new-cli.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* Compartmentalize commands into the subcommands ``mud``, ``zscan``, and ``sample``. See documentation for more info.
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>

src/diffpy/labpdfproc/functions.py

@@ -245,7 +245,7 @@ def _cve_method(method):
 def compute_cve(
     input_pattern, mud, method="polynomial_interpolation", xtype="tth"
 ):
-    f"""Compute and interpolate the cve
+    f"""Compute and interpolate the cylindrical volume effect (cve)
     for the given input diffraction data and mu*D
     using the selected method.