v0.4.0

• Get rid of deprecated componentWillUpdate method in HTMLTable component;
• Fix inconsistent odd/even rules;
• Run injected javascript in a closure, #4;
• Add new TableStyleSpecs properties:
  • Add cellPaddingEm, borderWidthPx, thOddBackground, thOddColor;
  • BREAKING remove thBackground and thColor;
  • Add thEvenBackground and thEvenColor.