Watchdog for all RevPis, cycletools with .core/.io/.runtime, bugfix on MemIO for str()

All RevPis got .core.wd for Software-Watchdog with RevPiPyLoad
All RevPis has .core.wd_toggle() function to toggle watchdog bit
Cycletools has .core and .io attribute to be independent of rpi object
Cycletools has .runtime to get the actual runtime of function

.idea/codeStyles/Project.xml

@@ -0,0 +1,6 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <option name="LINE_SEPARATOR" value="&#10;" />
+    <option name="RIGHT_MARGIN" value="80" />
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>