pivotshort: trendema add initial date

[ankion]

[codecov[bot]]

Codecov Report

Merging #875 (65218d8) into main (d31b812) will decrease coverage by 0.03%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #875      +/-   ##
==========================================
- Coverage   19.85%   19.81%   -0.04%     
==========================================
  Files         385      385              
  Lines       28825    28860      +35     
==========================================
- Hits         5723     5719       -4     
- Misses      22563    22602      +39     
  Partials      539      539              

Impacted Files	Coverage Δ
pkg/strategy/pivotshort/trendema.go	0.00% <0.00%> (ø)
pkg/bbgo/exit_trailing_stop.go	49.10% <0.00%> (-15.73%)	:arrow_down:
pkg/bbgo/order_executor_general.go	30.69% <0.00%> (-3.01%)	:arrow_down:

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