Changelog: update release time and tx

CHANGELOG.md

@@ -4,9 +4,11 @@ Update this for each program release and mainnet deployment.
 
 ## not on mainnet
 
+## mainnet
+
 ### v0.2.0, 2023-1-13
 
-Deployment: date, tx
+Deployment: Jan 13, 2023 at 11:31:05 Central European Standard Time, https://explorer.solana.com/tx/4yGRUk6QwntvC4umECDPDZJNcbevSJ1fdZi75Mz9rGa9SHKzUtjMF3V5FCTkzBZqAETQTccqv63BYw6yX8JNxiur
 
 - Add an optional security authority with the ability to halt a group or
   temporarily freeze user accounts.
@@ -17,8 +19,6 @@ Deployment: date, tx
 - Perp bankruptcy is now allowed when settling is impossible, even when there are
   spot assets remaining.
 
-## mainnet
-
 ### Jan 5, 2023 Central European Standard Time
 
 - Change max staleness slots from -1 to 600 for trustless token registering

ts/client/src/mango_v4.ts

@@ -1,5 +1,5 @@
 export type MangoV4 = {
-  "version": "0.1.2",
+  "version": "0.2.0",
   "name": "mango_v4",
   "instructions": [
     {
@@ -7717,7 +7717,7 @@ export type MangoV4 = {
 };
 
 export const IDL: MangoV4 = {
-  "version": "0.1.2",
+  "version": "0.2.0",
   "name": "mango_v4",
   "instructions": [
     {