add v1.38.0 release note

doc/release/v1.38.0.md

@@ -0,0 +1,47 @@
+
+## Improvements
+
+- [#849](https://github.com/c9s/bbgo/pull/849): optimizer: print equity diff in final report
+- [#850](https://github.com/c9s/bbgo/pull/850): optimizer: calculate total number of grids before testing
+- [#838](https://github.com/c9s/bbgo/pull/838): optimizer: improve: use marshal instead of marshal indent
+- [#845](https://github.com/c9s/bbgo/pull/845): refactor: refactor standard indicator and add simple indicator interface
+- [#825](https://github.com/c9s/bbgo/pull/825): refactor: new indicator api
+
+## Strategies
+
+- [#848](https://github.com/c9s/bbgo/pull/848): strategy/pivotshort: refactor trendEMA and add maxGradient config
+- [#847](https://github.com/c9s/bbgo/pull/847): strategy/pivotshort: fine-tune and add more trade stats metrics
+- [#846](https://github.com/c9s/bbgo/pull/846): strategy/pivotshort: refactor breaklow + add fake break stop
+- [#834](https://github.com/c9s/bbgo/pull/834): strategy/pivotshort: add trade loss to the account value calculation
+- [#833](https://github.com/c9s/bbgo/pull/833): strategy/pivotshort: fix margin quantity calculation
+- [#840](https://github.com/c9s/bbgo/pull/840): strategy/supertrend: fix exit methods problem
+- [#842](https://github.com/c9s/bbgo/pull/842): feature: bollmaker exit methods
+
+## Fixes
+
+- [#832](https://github.com/c9s/bbgo/pull/832): update: fix and update schedule strategy
+
+
+[Full Changelog](https://github.com/c9s/bbgo/compare/v1.37.0...main)
+
+ - [#849](https://github.com/c9s/bbgo/pull/849): optimizer: print equity diff in final report
+ - [#850](https://github.com/c9s/bbgo/pull/850): optimizer: calculate total number of grids before testing
+ - [#851](https://github.com/c9s/bbgo/pull/851): stabilize drift 
+ - [#848](https://github.com/c9s/bbgo/pull/848): strategy/pivotshort: refactor trendEMA and add maxGradient config
+ - [#847](https://github.com/c9s/bbgo/pull/847): strategy/pivotshort: fine-tune and add more trade stats metrics
+ - [#846](https://github.com/c9s/bbgo/pull/846): strategy/pivotshort: refactor breaklow + add fake break stop
+ - [#813](https://github.com/c9s/bbgo/pull/813): feature: drift study
+ - [#844](https://github.com/c9s/bbgo/pull/844): strategy/pivotshort: refactor and update indicator api usage
+ - [#845](https://github.com/c9s/bbgo/pull/845): refactor: refactor standard indicator and add simple indicator interface
+ - [#843](https://github.com/c9s/bbgo/pull/843): fix splitted from feature/drift_study
+ - [#822](https://github.com/c9s/bbgo/pull/822): refactor: ewoDgtrd: upgrade order executor api
+ - [#842](https://github.com/c9s/bbgo/pull/842): feature: bollmaker exit methods
+ - [#840](https://github.com/c9s/bbgo/pull/840): strategy/supertrend: fix exit methods problem
+ - [#838](https://github.com/c9s/bbgo/pull/838): improve: use marshal instead of marshal indent
+ - [#837](https://github.com/c9s/bbgo/pull/837): risk: add account value calculator test case
+ - [#836](https://github.com/c9s/bbgo/pull/836): refactor: risk functions for leveraged quantity
+ - [#834](https://github.com/c9s/bbgo/pull/834): fix: strategy/pivotshort: add trade loss to the account value calculation
+ - [#833](https://github.com/c9s/bbgo/pull/833): fix: strategy/pivotshort: fix margin quantity calculation
+ - [#825](https://github.com/c9s/bbgo/pull/825): refactor: new indicator api
+ - [#831](https://github.com/c9s/bbgo/pull/831): feature: api: add strategy defaulter interface
+ - [#832](https://github.com/c9s/bbgo/pull/832): update: fix and update schedule strategy