v2.13.4

What's Changed

• feat: add freezeTemplate() API, warn on mutation by @nolanlawson in #2825
• fix(engine-dom): refactor stylesheet API for consistency by @nolanlawson in #2827
• fix: Relax static id validation in iterations by @pmdartus in #2830
• fix(rollup-plugin): emit warnings during compilation by @nolanlawson in #2833
• fix(engine-dom): make feature flags work by @nolanlawson in #2812
• perf(engine-dom): refactor style cache to reduce lookups by @nolanlawson in #2832
• fix: trigger slotchange event on removing slot by @abdulsattar in #2840

Full Changelog: v2.13.3...v2.13.4