v0.6.15

Release refs/tags/v0.6.15

What's Changed

• 166 canvas video by @BlackRam-oss in #187
• 174 function to check if a step has already been started by @BlackRam-oss in #193
• 182 pixijs sound by @BlackRam-oss in #198
• 202 other pixivn json implementations by @BlackRam-oss in #205
• onStepError by @BlackRam-oss in #206

Full Changelog: v0.6.14...v0.6.15