add v1.39.0 release note

doc/release/v1.39.0.md

@@ -0,0 +1,25 @@
+[Full Changelog](https://github.com/c9s/bbgo/compare/v1.38.0...main)
+
+ - [#882](https://github.com/c9s/bbgo/pull/882): strategy/autoborrow: add debt re-balancing
+ - [#877](https://github.com/c9s/bbgo/pull/877): strategy/supertrend: update example config
+ - [#878](https://github.com/c9s/bbgo/pull/878): Drift rebase
+ - [#875](https://github.com/c9s/bbgo/pull/875): pivotshort: trendema add initial date
+ - [#876](https://github.com/c9s/bbgo/pull/876): Fix: risk.AvailableQuote() should use Net() to get net value
+ - [#874](https://github.com/c9s/bbgo/pull/874): Fix binance futures
+ - [#872](https://github.com/c9s/bbgo/pull/872): fix: trailing stop properly works on both long and short positions
+ - [#873](https://github.com/c9s/bbgo/pull/873): improve: generalorderexecutor retries submit/cancel order once
+ - [#871](https://github.com/c9s/bbgo/pull/871): improve: improve maxapi, add v2 order api back
+ - [#869](https://github.com/c9s/bbgo/pull/869): Revert "feature: add smart cancel to drift"
+ - [#853](https://github.com/c9s/bbgo/pull/853): feature: add smart cancel to drift
+ - [#860](https://github.com/c9s/bbgo/pull/860): exchange: order fee-amount protection
+ - [#865](https://github.com/c9s/bbgo/pull/865): fix: protectivestoploss not working on long position
+ - [#868](https://github.com/c9s/bbgo/pull/868): fix: many minor fixes
+ - [#867](https://github.com/c9s/bbgo/pull/867): strategy: factorzoo: upgrade indicators and add comments
+ - [#862](https://github.com/c9s/bbgo/pull/862): Improve: supertrend strategy
+ - [#863](https://github.com/c9s/bbgo/pull/863): types: rbtree: resolve neel reusing problem
+ - [#852](https://github.com/c9s/bbgo/pull/852): feature: PositionModifier
+ - [#861](https://github.com/c9s/bbgo/pull/861): strategy/supertrend: re-organize exits part of config
+ - [#855](https://github.com/c9s/bbgo/pull/855): optimizeex: hyperparameter optimization tool
+ - [#856](https://github.com/c9s/bbgo/pull/856): exchange: FTX default fee
+ - [#857](https://github.com/c9s/bbgo/pull/857): optimizer: calculate equity diff from whole assets instead of first symbol
+ - [#854](https://github.com/c9s/bbgo/pull/854): fix: added SideEffectTypeAutoRepay to pivotshort take-profit order