v2.14.0

What's Changed

• fix(build): remove swc, switch back to babel and terser by @nolanlawson in #2818
• 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
• chore: update dependencies by @abdulsattar in #2838
• test: run feature flag test code only in karma by @nolanlawson in #2835
• fix: trigger slotchange event on removing slot by @abdulsattar in #2840
• test(integration-karma): silence lwc rollup plugin warnings by @nolanlawson in #2836
• chore: release v2.14.0 by @abdulsattar in #2846
• chore: release v2.14.0 (#2846) @W-7258582 by @abdulsattar in #2847

Full Changelog: v2.13.3...v2.14.0