IBC Solo Machine v0.1.5

What's Changed

• Problem: ack json encoding not compatible with ics20 spec by @yihuang in #105
• Problem: use deprecated non-hex attributes by @yihuang in #104
• Upgrade dependencies by @devashishdxt in #107

New Contributors

• @yihuang made their first contribution in #105

Full Changelog: v0.1.4...v0.1.5