improve data on author_handle.json files

Updated URLs, Email addresses, GitHub handles,
Mastodon handles, and locations of various IOCCC winning authors.

author/Tony_Finch.json

@@ -4,15 +4,15 @@
     "author_handle" : "Tony_Finch",
     "full_name" : "Tony Finch",
     "sort_word" : "finch",
-    "location_code" : null,
-    "location_name" : null,
+    "location_code" : "GB",
+    "location_name" : "United Kingdom of Great Britain and Northern Ireland (the)",
     "email" : "dot@dotat.at",
-    "url" : "http://dotat.at/",
+    "url" : "https://dotat.at",
     "alt_url" : null,
     "deprecated_twitter_handle" : null,
-    "mastodon" : null,
-    "mastodon_url" : null,
-    "github" : null,
+    "mastodon" : "@fanf@mendeddrum.org",
+    "mastodon_url" : "https://mendeddrum.org/@fanf",
+    "github" : "@fanf2",
     "affiliation" : null,
     "winning_entry_set" : [
 	{ "winner_id" : "1998_fanf" }