params: release Geth v1.9.1

params: release Geth v1.9.0

Merge pull request ethereum#19473 from karalabe/geth-1.8.27

[1.8.27 backport] eth, les, light: enforce CHT checkpoints on fast-sync too

Merge pull request ethereum#19437 from zsfelfoldi/fix-sendtx

les: fix SendTx cost calculation and verify cost table

Merge pull request ethereum#19416 from jmcnevin/cli-fix

Revert flag removal

Merge pull request ethereum#19370 from karalabe/geth-1.8.24

Backport PR for the v1.8.24 maintenance release

Merge pull request ethereum#19029 from holiman/update1.8

Update1.8

params, swarm/version: Geth 1.8.22-stable, Swarm 0.3.10-stable

params, swarm: release Geth v1.8.21 and Swarm v0.3.9

params, swarm: release Geth v1.8.20 and Swarm v0.3.8