Added warning about missing config file

Now mandatory

kicost/config.py

@@ -178,6 +178,9 @@ def load_config(file=None):
         log_api_options('Loaded API options', obsessive=True)
     else:
         debug_overview('No config file found ({})'.format(file))
+        warning(W_CONFIG, "You should create a configuration file named `{}` containing your credentials".format(file))
+        warning(W_CONFIG, "Please consult the docs: "
+                "https://hildogjr.github.io/KiCost/docs/_build/singlehtml/index.html#document-configuration")
     # Make sure all APIs are in the options
     for api in get_api_list():
         if api not in api_options:

kicost/kicost_gui.py

@@ -58,7 +58,7 @@
 from .kicost import kicost, output_filename  # kicost core functions.
 from .distributors import init_distributor_dict, get_distributors_iter, get_distributor_info, get_dist_name_from_label, set_distributors_progress
 from .edas import file_eda_match, get_registered_eda_names, get_eda_label, get_registered_eda_labels
-from .log import CustomFormatter
+from .log import CustomFormatter, MyLogger
 py_2 = sys.version_info < (3, 0)
 if sys.platform.startswith("win32"):
     from .os_windows import reg_enum_keys, reg_get
@@ -1179,6 +1179,7 @@ def kicost_gui(force_en_us, files, configure_kicost_apis, command_line_api_optio
     ProgressGUI.frame = frame
     # Redirect the logging system to the GUI area
     logger_stream = GUI_Stream(frame.m_textCtrl_messages)
+    MyLogger.warn_hash = {}
     for handler in get_logger().handlers:
         if py_2:
             handler.stream = logger_stream