v3.26.4

• fixed: avoid detecting a cycle when there's a PR/MR from main or master in a fork to the original repo (reported by @Joibel)
• fixed: git machete git{hub,lab} create-{pr,mr} no longer fails when creating a PR/MR across forks; instead, a forked PR is created (reported by @cspotcode)
• improved: git machete git{hub,lab} checkout-{prs,mrs} only adds annotations to affected branches (and not to every branch)