Resolve "release v1.4.0"

Closes #317 (closed)

mlair/configuration/defaults.py

@@ -48,7 +48,7 @@ DEFAULT_CREATE_NEW_BOOTSTRAPS = False
 DEFAULT_NUMBER_OF_BOOTSTRAPS = 20
 DEFAULT_PLOT_LIST = ["PlotMonthlySummary", "PlotStationMap", "PlotClimatologicalSkillScore", "PlotTimeSeries",
                      "PlotCompetitiveSkillScore", "PlotBootstrapSkillScore", "PlotConditionalQuantiles",
-                     "PlotAvailability", "PlotAvailabilityHistogram", "PlotDataHistogram"]
+                     "PlotAvailability", "PlotAvailabilityHistogram", "PlotDataHistogram", "PlotPeriodogram"]
 DEFAULT_SAMPLING = "daily"
 DEFAULT_DATA_ORIGIN = {"cloudcover": "REA", "humidity": "REA", "pblheight": "REA", "press": "REA", "relhum": "REA",
                        "temp": "REA", "totprecip": "REA", "u": "REA", "v": "REA", "no": "", "no2": "", "o3": "",