Release v0.3.8

clicking "use no deck" without having a deck selected will currently crash the tracker, so.. don't do that :)
+Imported decks now save the url (and write it into the deck-notes). This allows for edit -> import to overwrite decks (from the same url).
+Logging can now be turned on via config. You don't need to worry about this unless there's bugs and someone (probably me) asks you to turn it on. (I'm also gonna have to redo what's actually logged, it's a bit messy right now)

*Fixed an issue where the Tracker would run out of memory when the output_log file got too big.
*Fixed an issue where not all invalid characters in deck names would get removed when saving screenshots, causing the tracker to crash. Also: no more screenshots when no deck is selected.
*Fixed screenshot using the deck from the current game (including draws, etc) instead of the full deck.
*Fixed the overlay being displayed on other windows (e.g. folders) named "Hearthstone"
*It should be a bit clearer now, which deck is actually selected in "My Decks".
*Changed font weight of deck names.