putting dates on them

experiment/production/GPRS-GPS-notes.md

@@ -1,6 +1,8 @@
 Raspberry Pi GPRS/GPS notes
 ===
 
+###### 2019-11-01
+
 I'm focusing on a SIM4320(A) chip:
 
 * [Adafruit](https://www.adafruit.com/product/2687)

experiment/production/Misc-Notes.md

@@ -1,6 +1,8 @@
 Misc. Notes
 ===
 
+###### 2019-11-01
+
 * [Raspberry Pi Configuration](https://www.raspberrypi.org/documentation/configuration/)
 
 Custom Splash Screen

experiment/production/Production-Overview.md

@@ -1,6 +1,8 @@
 Production Unit Development Overview
 ===
 
+###### 2019-11-01
+
 This is a document recording notes for the path to creating a working production unit.
 
 Hardware