v9.0.0+tibiash.7: chore: release 9.0.0+tibiash.7 (#19)

• Read loot ranges with commas as thousands separators, like 1,000-2,000, as 1000 to 2000 instead of 0 to 2. This
  covers creature loot and the Loot Statistics pages. A Loot Statistics entry like
  Gold Coin, times:1,234, amount:1,000-2,000 keeps 1,234 and 1,000-2,000 whole, and an entry whose times has no
  number is skipped instead of stopping the task. Neither side of a range has a sign, as before, and 1,0002-3 still
  reads as 2 to 3. No current value changes.
• Read a currency linked with a leading colon, like [[:Gold Token]], as Gold Token instead of :Gold Token, in
  item.value_buy_currency and mount.price_currency. Colon links to files, images and categories are still skipped.
  No current value changes.
• Keep the Loot Statistics task running past a bad page. An entry without times is skipped, and a page whose kills
  is 0, missing or not a number gets no drop rows, since no chance can be computed. Before, each of these stopped the
  task for every later page. A page with negative kills also gets no drop rows, and an entry with negative times
  is skipped, instead of replacing a drop with a negative chance. No current value changes.