message: fix water-water hbond detection and set to off by default
diff: /**
  - * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
  + * Copyright (c) 2019-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author Alexander Rose <alexander.rose@weirdbyte.de>
  * @author Fred Ludlow <Fred.Ludlow@astx.com>
  @@ -32,7 +32,7 @@ type GeometryProps = PD.Values<GeometryParams>
  const HydrogenBondsParams = {
  ...GeometryParams,
  - water: PD.Boolean(true, { description: 'Include water-to-water hydrogen bonds' }),
  + water: PD.Boolean(false, { description: 'Include water-to-water hydrogen bonds' }),
  sulfurDistanceMax: PD.Numeric(4.1, { min: 1, max: 5, step: 0.1 }),
  }
  type HydrogenBondsParams = typeof HydrogenBondsParams
  @@ -174,9 +174,8 @@ function addUnitHydrogenAcceptors(structure: Structure, unit: Unit.Atomic, build
  }
  }
  -
  function isWater(unit: Unit.Atomic, index: StructureElement.UnitIndex) {
  - return unit.model.atomicHierarchy.derived.residue.moleculeType[unit.elements[index]] === MoleculeType.Water
  + return unit.model.atomicHierarchy.derived.residue.moleculeType[unit.residueIndex[unit.elements[index]]] === MoleculeType.Water
  }
  function isBackbone(unit: Unit.Atomic, index: StructureElement.UnitIndex) {
  