Merge branch 'master' into prgn-remove-old-service-second-try

* master:
  Update to substrate 2.0 (#1744)
  Companion: Handle construct_runtime breaking change. (#1692)
  Companion for `ModuleToIndex` to `PalletInfo` rename (#1743)
  Companion for substrate/pull/7161 (#1739)
  Companion for 7155 (WeightInfo for Babe and Grandpa) (#1736)
  Companion PR for #7136 (WeightInfo for Session / Offences) (#1735)