Pvl 1.3.0 Fix (#193)

* Fixed pvl writing in Plio for pvl = 1.3.0

* Updated change log

* Fixed change log typos

* Fixed more change log typos

* Fixed even more typos in change log

CHANGELOG.md

@@ -35,6 +35,8 @@ release.
 
 ## [Unreleased]
 
+### Fixed
+- Updated `create_pvl_header()` to add a newline (`\n`) character to the end of the pvl string. This ensures that the control networks can be written, then read back in using pvl 1.3.0 [#193](https://github.com/USGS-Astrogeology/plio/pull/193)
 
 ## [1.5.3]()
 ### Fixed

plio/io/io_controlnetwork.py

@@ -224,7 +224,7 @@ class IsisStore(object):
         Given an ISIS store, read the underlying ISIS3 compatible control network and
         return an IsisControlNetwork dataframe.
         """
-        pvl_header = pvl.load(self._path, grammar=pvl.grammar.ISISGrammar())
+        pvl_header = pvl.load(self._path)
         header_start_byte = find_in_dict(pvl_header, 'HeaderStartByte')
         header_bytes = find_in_dict(pvl_header, 'HeaderBytes')
         point_start_byte = find_in_dict(pvl_header, 'PointsStartByte')
@@ -499,4 +499,4 @@ class IsisStore(object):
                  )
         ])
 
-        return pvl.dumps(header, encoder=encoder)
+        return pvl.dumps(header, encoder=encoder) + "\n"