v1.8.0-rc.1

What's Changed

• [metrics] fix metric name and use type as label. by @jolestar in #2984
• fix yield farming parameter error by @welbon in #2985
• [metrics] Use a new metric for sync select head and rename networkp2p metrics by @jolestar in #2987
• Fix network panic by @fikgol in #2990
• pprof with criterion for flamegraph by @nkysg in #2992
• yield farming fix bug by @welbon in #2994
• stdlib: support gen diff between any versions by @lerencao in #2993
• reset proxima by @lerencao in #2999

Full Changelog: v1.8.0-alpha...v1.8.0-rc.1