Release 1.4.0

• Line chart bubble race condition fix (#107) (b58a634)
• Fixed and reworked hash decoding behaviour (#106) (a1ec592)
• Added measure selection requirement to Circumstance Evaluator (#103) (b554e97)
• Disabled setting drag image in browsers that do not support it (#100) (91f0cc1)
• Health endpoint verifies Druid brokers' health and readiness (#99) (d72986c)
• Generating links documentation mentioned in README (a072a3e)
• Additional view definition abstraction and new url version (#93) (ac0b36b)
• Documentation for configuration property subsetFormula. (f3321a1)