0.3.0

Added

• Relatório tab, the first one: for each offer, the linked product, the
  store's price, the lowest price on KuantoKusta and its store, the
  difference in euros and percent and the position. Easy adjust and
  "check the link" are highlighted; prices from an older collection are
  marked. The header says when the last collection ended and how.
• Filters by outcome, offer state, easy adjust, link check and missing
  link, and a switch to compare with shipping; sorting by product, price,
  difference or percentage.
• CSV export of the filtered report for Excel in Portugal, protected
  against formulas in product names.