v4.12.0

• Add d3.clientPoint.
• Add zoom.constrain.
• Add f, Q, s, u and V time format specifiers. Thanks, @BrianMitchL @krukon!
• Add projection.fitWidth, projection.fitHeight. Thanks, @mfogel!
• Add tr-TR time format locale. Thanks, @filiz137!
• Improve messages for transition lifecycle errors.
• Fix infinite loop in interval.range.
• Fix sub-millisecond ticks for time scales. Thanks, @FracturedShader!
• Fix thousands separator in fr-FR number format locale. Thanks, @victornoel!
• Fix missing data.columns when the input to dsv.parse is empty. Thanks, @tomwanzek!
• Minor optimization to d3.interpolateArray. Thanks, @jetzhliu.