add a logbook with relevant and useful info

LOGBOOK.md

@@ -0,0 +1,13 @@
+<p align="center">LOGBOOK</p>
+
+---
+<h2 align="center">Anomalies</h2>
+
+1. Due to a hard drive failure and the *lack of time* to fix the
+   issue, there is a gap in the collection at about *16 days* between
+   **2019-05-14 12:32:32** and **2019-05-30 20:36:24** where data has not
+   been collected. This of course means that some data will be missing
+   in this time period. **Most of it is probably about news broadcasts** which
+   usually have an expiration date at about a week after it's live broadcast.
+
+   ---