Log Message:
geography/viking: Update to 1.8

Viking 1.8 (2020-02-02)
New features since 1.7
* New GeoClue Layer to Track Position from the GeoClue service
** Not available on Windows
* Per Year Track Analysis
* Track Timing Speed Splits Analysis
* Subsecond Timing Precision for Tracks & Waypoints
* Track Area Coverage Feature
* Native Read Support of Zip & bzip2 Files
** This attempts to load supported files found within the compressed file
* Native Basic TCX Read Support
* Embedded (Elevation & Speed) Graphs in the Main Window
* Improved icons for Aggregate and Maps layers
* Scrolling Options for Better Usage with Touchpads
* Right Click Menu Options on the Calendar
* Various Keyboard Enhancements:
** Left & Right arrow keys selects the previous or next trackpoint respectively
** Keypad '+' & Keypad '-' inserts a trackpoint after or before of the \ 
current trackpoint
** Menu key opens the track context menu
* SF Features#117: Area Calculation Tool
* Large Basque language translation update
* Many other small fixes - see the ChangeLog for the full details.