New icons v0.15.11

New icons 🎨

• circle-slashed (#288) by @mittalyashu
• cloud-fog (#289) by @ericfennis
• cloud-moon (#289) by @ericfennis
• cloud-sun (#289) by @ericfennis
• cloudy (#289) by @ericfennis
• tornado (#289) by @ericfennis