Update of PRs so far for a v0.21 release

docs/_docs/testnet/changelog.md

@@ -2,6 +2,61 @@
 ---
 # Ten Testnet Change Log
 
+# Oct 2024-01-15 (v0.21.0)
+* A list of the PRs merged in this release is as below;
+    * `cdc02ebe` Adding batch timestamp to the public tx api (#1740)
+    * `a41bff9e` Fix the enclave stream reconnect (#1741)
+    * `f72e986c` Host: small cache of blocks by hash (#1738)
+    * `3103eca1` Change network name (#1735)
+    * `5aee83a8` [gateway] Health check on gateway ui/frontend (#1729)
+    * `f6f147ab` [gateway] Set distdir based on node_env (#1693)
+    * `74e0a395` [gateway] Health check on gateway backend (#1728)
+    * `856e72e3` [gateway] Update expired discord link and add warning msg to gateway ui (#1709)
+    * `8d534c00` [tenscan] Fix latest batch (#1704)
+    * `3daec735` [tenscan] Health check ui on tenscan (#1719)
+    * `f77ac97e` [tenscan] Endpoint for health check (#1718)
+    * `b6dada78` Change domain from obscu.ro to ten.xyz (#1733)
+    * `e984af1e` Adds faucet + gateway to launcher (#1734)
+    * `986f6995` Fix concurrent map writes (#1732)
+    * `a0cec156` [network-tests] Update uat config (#1731)
+    * `010815f1` Change tenscan link in gateway and docs (#1726)
+    * `b2e41d36` Add enclave block and batch health checks (#1727)
+    * `f159fb8c` Docs: fix typos (#1723)
+    * `a332d76f` Make walletextensioncontainer.start() non blocking (#1722)
+    * `06d02fb2` Add new node flow fixes (#1712)
+    * `b6444cfe` Comment panic line (#1725)
+    * `33d59d17` Refactor obscuroscan to tenscan (#1716)
+    * `5cd64e8f` Tenscan workflow (#1724)
+    * `520ea1ee` Fix build (#1721)
+    * `c9908321` Fix gateway spammy logs (#1715)
+    * `952a281f` Gaslimit + gascap flags (#1682)
+    * `6389ace6` Debug hh deployer (#1710)
+    * `5c369332` Statedb revert to snapshot for ignored batches (#1713)
+    * `63ba4990` Add validator flow (#1711)
+    * `98e0913f` Remove check performed in the mempool (#1708)
+    * `4ee0ccac` Set retention to 7 days for deployer logs (#1706)
+    * `875e3e3b` [tenscan] Address and tx placeholder page for metamask redirect link (#1705)
+    * `b528fcb0` [gateway] Fix loading screen and connect accounts on reload (#1703)
+    * `c7aee804` Fix statedb error during mempool (#1702)
+    * `5c4e75d5` [gateway] Enable metamask desktop and mobile support (#1697)
+    * `6605017d` Testnet deployments set enclave testmode=true (#1701)
+    * `ecf49b14` Close mempool and use the geth defaults for the mempool (#1699)
+    * `ae34047b` Enclave produce no batch if all tx failed (#1698)
+    * `7c2a4df7` Fix error page for non-mm users (#1696)
+    * `457777e6` Add `$` to ether price (#1694)
+    * `0f690c90` Change network name back to obscuro testnet, to avoid warnings (#1695)
+    * `c4c827d5` Tenscan updates (#1683)
+    * `dbfa7a30` Revert deleting favicon (#1691)
+    * `b2651ab3` [gateway] Front end fixes for non-mm users (#1690)
+    * `b428c62f` [gateway] Remove listener for account change (#1689)
+    * `b2ddee04` Deploy new ten gateway frontend (#1686)
+    * `2fa60897` Use the 3.18 go alpine image (#1687) (#1688)
+    * `d9ead96a` Ten gateway (#1657)
+    * `0fd37731` Rpc ap  ensure hash field included in batches json (#1684)
+    * `ca7f91b2` Adding enclave restricted flags (#1668)
+    * `4551c81b` Enclave no panic for bad rlp format (#1679)
+    * `fb50c7ba` Use the cached head block (#1678)
+
 # Oct 2023-12-01 (v0.20.0)
 * A list of the PRs merged in this release is as below;
   * `1433e41e` Tenscan updates (#1661)