* version: bump parity beta to 2.1.4
* ethcore: bump ropsten forkblock checkpoint (#9775)
* ethcore: handle vm exception when estimating gas (#9615)
* removed "rustup" & added new runner tag (#9731)
* removed "rustup" & added new runner tag
* exchanged tag "rust-windows" with "windows"
* revert windows tag change
* sync: retry different peer after empty subchain heads response (#9753)
* If no subchain heads then try a different peer
* Add log when useless chain head
* Restrict ChainHead useless peer to ancient blocks
* sync: replace `limit_reorg` with `block_set` condition
* update jsonrpc-core to a1b2bb742ce16d1168669ffb13ffe856e8131228
* Allow zero chain id in EIP155 signing process (#9792)
* Allow zero chain id in EIP155 signing process
* Rename test
* Fix test failure
* Insert dev account before unlocking (#9813)
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