Bugfix: Starttime read from filename and NOT from GPS measurement

Previously the start time was read from the GPS measurement stored in
the metadata, but this differed from the filename. The filename is now
being used instead as it seems to be what is considered proper.
Solve issue with __sampleend method. It has the last real sample to
process, not with the "range" semantic (last not considered).

dasscripts/dasconv.py

@@ -143,7 +143,7 @@ class TDMS(object):
             logs.info('Opening %s; Startime: %s' % (self.__available[self.__currentfile]['name'], self.__twstart))
 
         # Reset some properties before opening the new file
-        self.starttime = None
+        self.starttime = self.__available[self.__currentfile]['dt']
         self.endtime = None
         self.metadata = dict()
 
@@ -329,7 +329,7 @@ class TDMS(object):
 
         while (self.__twend is None) or (self.__twstart < self.__twend):
             # Loop through channels
-            while self.__samplecur < self.__sampleend:
+            while self.__samplecur <= self.__sampleend:
                 for ch in range(self.__chstart, self.__chstop+1, self.__chstep):
                     data = self.__readdata(channel=ch)
                     stats = {'network': 'XX', 'station': '%05d' % ch, 'location': '',

setup.py

@@ -23,7 +23,7 @@ setup(
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.1b3',
+    version='0.1b4',
 
     description='dasscripts: Scripts to work with data generated by DAS systems',
     long_description=long_description,