• Custom plugins now can be loaded from external js through path plugin param.
• New plugin convertEllipseToCircle to convert ellipse with equal radius measures to circle (by @tigt).
• New plugin sortDefsChildren for improved compression (by @davidleston).
• SVGO now removes unnecessary spaces after arcto path command flags.
• removeDimensions plugin now adds viewBox if it's missing (by @adipascu).
• Fixed removeUnusedNS not counting attributes in <svg> tag itself.
• Fixed an issue with incorrect processing multiple images (by @cyberalien).
• Fixed an error with incorrect converting multiple segmented curve to an arc.
• Fixed an error with matrix decomposition in convertTransform due to rounding error leading to illegal value.
• Added force option for mergePaths plugin (by @goyney).
• Added options to prefixIds plugin for selectively prefixing IDs and/or classes (by @strarsis).
• Exported config function (by @1000ch).