Major demo refresh.. switched everything to new function names, new design patterns

Out with the old, in with the new!!

Demo_Table_Pandas.py

@@ -1,12 +1,13 @@
 import pandas as pd
 import PySimpleGUI as sg
+import sys
 
 def table_example():
     sg.SetOptions(auto_size_buttons=True)
     filename = sg.PopupGetFile('filename to open', no_window=True, file_types=(("CSV Files", "*.csv"),))
     # --- populate table with file contents --- #
     if filename == '':
-        exit(69)
+        sys.exit(69)
     data = []
     header_list = []
     button = sg.PopupYesNo('Does this file have column names already?')
@@ -21,7 +22,7 @@ def table_example():
                 header_list = ['column' + str(x) for x in range(len(data[0]))]  # Creates columns names for each column ('column0', 'column1', etc)
         except:
             sg.PopupError('Error reading file')
-            exit(69)
+            sys.exit(69)
     # sg.SetOptions(element_padding=(0, 0))
 
     col_layout = [[sg.Table(values=data, headings=header_list, display_row_numbers=True,
@@ -30,9 +31,9 @@ def table_example():
     canvas_size = (13*10*len(header_list), 600)      # estimate canvas size - 13 pixels per char * 10 per column * num columns
     layout = [[sg.Column(col_layout, size=canvas_size, scrollable=True)]]
 
-    form = sg.FlexForm('Table', grab_anywhere=False)
-    b, v = form.LayoutAndRead(layout)
+    window = sg.Window('Table', grab_anywhere=False)
+    b, v = window.LayoutAndRead(layout)
 
-    exit(69)
+    sys.exit(69)
 
 table_example()