1.3.1 / 29.10.2019

• Updated CSSO version to 4.0.2 fixing the issue with empty semicolons ";;" in styles (thanks to @strarsis and @lahmatiy).
• prefixIds plugin now runs only once with --multipass option (by @strarsis).
• cleanupIDs plugin is prevented from producing a preserved ID, including one which matches a preserved prefix, when minifying (by @thomsj).

1.3.0 / 14.07.2019

• 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).

1.2.2 / 16.04.2019

• Update js-yaml for Code Injection warning (by @kaungst).

1.2.1 / 04.04.2019

Some goodness from pull-requests.

• Bump up js-yaml version to fix DoS vulnerability (by @eugestarr).

1.2.0 / 24.02.2019

Some goodness from pull-requests.

• Fixed extra blank lines when processing many files (by @panczarny).
• Added --recursive option to process folders recursevely with option -f (by @dartess).
• Added removeAttributesBySelector plugin to remove elements matching a css selector (by @bmease).
• Added removeOffCanvasPaths plugin to remove elements outside of the viewbox (by @JoshyPHP).
• removeAttrs plugin: added preserveCurrentColor color (by @roblevintennis) and 3rd optional filter for a value (by @Herman-Freund).
• Added reusePaths plugin to replace duplicated elements with link (by @jhowcrof).
• Added support of comma-separated plugins list in --disable and --enable options (by @jmwebservices).
• Added option to preserve IDs based on prefix in cleanupIDs plugin (by @bkotzz).
• Replaced colors dependency with chalk (by @xPaw).

1.1.1 / 17.09.2018

• Fixed crash in SVGO.optimize() when ‘info’ is absent.
• Removed extra space after cleanupListOfValues plugin.

1.1.0 / 16.09.2018

• Fixed collapseGroups plugin removing property with a child having inherit value.
• version attribute value is not more being rounded.
• Fixed jsAPI clone method with respect to the introduced CSS classes.
• Fixed scaling strokes with vector-effect="non-scaling-stroke" (by @alexjlockwood).
• Fixed passing properties from groups in collapseGroups plugin if child have a filter (by @stristr).
• Fixed arc path commands parsing without separators after flags, effectively producing a JS error.
• Fixed viewBox separators parsing.
• Fixed removeNonInheritableGroupAttrs plugin to work as intended.
• Fixed removing path segments without length in presence of stroke-linecap.
• Fixed removeUnknownsAndDefaults plugin removing attributes from elements with id.
• Fixed converting to large arcs from nearly straight lines curves.
• Fixed collapseGroups plugin affecting <switch> and its subgroups.
• Fixed convertTransform plugin converting to rotate() with wrong sign in some case.
• Fixed cleanupListOfValues plugin not preserving non-numeric values.
• Fixed !important being passed to attributes in convertStyleToAttrs plugin.
• Added option keepImportant to convertStyleToAttrs plugin to preserve styles with !important.
• removeHiddenElems plugin now also removes elements with visibility="hidden" attribute (by @mikolaj92).
• Added forceAbsolutePath option to convertPathData plugin to always use absolute coordinates (by @cool).
• Added keepRoleAttr for removeUnknownsAndDefaults plugin to preserve role- attributes (by @himedlooff).
• Added xmlns order option in sortAttrs plugin (by @hellatan).
• Added an option to prefixIds plugin to pass prefix as false or as a function that returns false (by @vzaidman).
• prefixIds plugin now adds prefix to every class (by @vzaidman).
• Updated and improved docs a bit (multiple authors).

1.0.5 / 26.02.2018

Fixed issue with prefixIDs plugin not replacing url() values correctly (by @harrisjose).

1.0.4 / 30.01.2018

• Fixed bug with removing groups that are direct child of <switch>.
• Fixed bug with shorthand path points counting (thanks @alexjlockwood for noticing).
• Fixed crash on parsing invalid transform, e.g. without close parenthesis.

1.0.3 / 08.11.2017

• Fixed removeViewBox plugin to check for zero start coordinates.
• Removed extra info from STDOUT when it set to output.