v0.28.0: *2020-11-25*

Vega release logs contain a 🔥 emoji to denote breaking API changes. 🔥🔥 is a new combination denoting something that may significantly change your experience - from this release forward, transactions from keys that have no collateral on the network will *always* be rejected. As there are no transactions that don't either require collateral themselves, or an action to have been taken that already required collateral, we are now rejecting these as soon as possible.

We've also added support for synchronously submitting transactions. This can make error states easier to catch. Along with this you can now subscribe to error events in the event bus.

Also: Note that you'll see a lot of changes related to **Pegged Orders** and **Liquidity Commitments**. These are still in testing, so these two types cannot currently be used in _Testnet_.

New:
- [#2634](https://github.com/vegaprotocol/vega/pull/2634) Avoid caching transactions before they are rate/balance limited
- [#2626](https://github.com/vegaprotocol/vega/pull/2626) Add a transaction submit type to GraphQL
- [#2624](https://github.com/vegaprotocol/vega/pull/2624) Add mutexes to assets maps
- [#2593](https://github.com/vegaprotocol/vega/pull/2503) 🔥🔥 Reject transactions
- [#2453](https://github.com/vegaprotocol/vega/pull/2453) 🔥 Remove `baseName` field from markets
- [#2536](https://github.com/vegaprotocol/vega/pull/2536) Add Liquidity Measurement engine
- [#2539](https://github.com/vegaprotocol/vega/pull/2539) Add Liquidity Provisioning Commitment handling to markets
- [#2540](https://github.com/vegaprotocol/vega/pull/2540) Add support for amending pegged orders
- [#2549](https://github.com/vegaprotocol/vega/pull/2549) Add calculation for liquidity order sizes
- [#2553](https://github.com/vegaprotocol/vega/pull/2553) Allow pegged orders to have a price of 0
- [#2555](https://github.com/vegaprotocol/vega/pull/2555) Update Event stream votes to contain proposal ID
- [#2556](https://github.com/vegaprotocol/vega/pull/2556) Update Event stream to contain error events
- [#2560](https://github.com/vegaprotocol/vega/pull/2560) Add Pegged Order details to GraphQL
- [#2607](https://github.com/vegaprotocol/vega/pull/2807) Add support for parking orders during auction

Improvements:
- [#2634](https://github.com/vegaprotocol/vega/pull/2634) Avoid caching transactions before they are rate/balance limited
- [#2626](https://github.com/vegaprotocol/vega/pull/2626) Add a transaction submit type to GraphQL
- [#2624](https://github.com/vegaprotocol/vega/pull/2624) Add mutexes to assets maps
- [#2623](https://github.com/vegaprotocol/vega/pull/2623) Fix concurrent map access in assets
- [#2608](https://github.com/vegaprotocol/vega/pull/2608) Add sync/async equivalents for `submitTX`
- [#2618](https://github.com/vegaprotocol/vega/pull/2618) Disable storing API-related data on validator nodes
- [#2615](https://github.com/vegaprotocol/vega/pull/2618) Expand static checks
- [#2613](https://github.com/vegaprotocol/vega/pull/2613) Remove unused internal `cancelOrderById` function
- [#2530](https://github.com/vegaprotocol/vega/pull/2530) Governance asset for the network is now set in the genesis block
- [#2533](https://github.com/vegaprotocol/vega/pull/2533) More efficiently close channels in subscriptions
- [#2554](https://github.com/vegaprotocol/vega/pull/2554) Fix mid-price to 0 when best bid and average are unavailable and pegged order price is 0
- [#2565](https://github.com/vegaprotocol/vega/pull/2565) Cancelled pegged orders now have the correct status
- [#2568](https://github.com/vegaprotocol/vega/pull/2568) Prevent pegged orders from being repriced
- [#2570](https://github.com/vegaprotocol/vega/pull/2570) Expose probability of trading
- [#2576](https://github.com/vegaprotocol/vega/pull/2576) Use static best bid/ask price for pegged order repricing
- [#2581](https://github.com/vegaprotocol/vega/pull/2581) Fix order of messages when cancelling a pegged order
- [#2586](https://github.com/vegaprotocol/vega/pull/2586) Fix blank `txHash` in deposit API types
- [#2591](https://github.com/vegaprotocol/vega/pull/2591) Pegged orders are now cancelled when all orders are cancelled
- [#2609](https://github.com/vegaprotocol/vega/pull/2609) Improve expiry of pegged orders
- [#2610](https://github.com/vegaprotocol/vega/pull/2609) Improve removal of liquidity commitment orders when manual orders satisfy liquidity provisioning commitments