Merge branch 'update-to-v1.21.0613' into 'master'

update changelog etc for v1.21.0613

See merge request gridtracker.org/gridtracker!120

debian/changelog

@@ -1,3 +1,11 @@
+gridtracker (1.21.0613) unstable; urgency=medium
+  [Bug Fixes]
+  - Fix pulling down LoTW log at start-up causing issue for other programs that are trying to sync LoTW logs.
+  [Enhancements]
+  - Updated list of contributors
+
+ -- Matthew Chambers <nr0q@gridtracker.org> Sun, 13 June 2021 03:04:00 -0000
+
 gridtracker (1.21.0530) unstable; urgency=medium
   [Bug Fixes]
   - Fix spots layer not refreshing/clearing when TX idle

package.nw/package.json

@@ -1,7 +1,7 @@
 {
   "name": "GridTracker",
   "product_string_do_not_use": "gridtracker",
-  "version": "1.21.0530",
+  "version": "1.21.0613",
   "betaVersion": "",
   "description": "GridTracker, an amateur radio companion",
   "author": "Stephen Loomis (N0TTL) and GridTracker.org",