github.com/sdcoffey/techan

0.13.0

• BREAKING: Raise the minimum supported Go version from 1.12 to 1.21.
• Replace Travis CI with GitHub Actions and test Go 1.21 through 1.26.
• Fix stop-loss percentage calculations for multi-unit orders and short positions (fixes #8).
• Fix trendline divide-by-zero behavior for sparse windows.
• Add cache invalidation support for built-in cached indicators.
• Document SMA and EMA warm-up behavior.
• Harden analysis helpers for empty records, invalid periods, zero cost basis, and short trades.
• Update Go module dependencies, including github.com/sdcoffey/big to v0.8.0 and github.com/stretchr/testify to v1.11.1.

• BREAKING: Raise the minimum supported Go version from 1.12 to 1.21.
• Replace Travis CI with GitHub Actions and test Go 1.21 through 1.26.
• Fix stop-loss percentage calculations for multi-unit orders and short positions (fixes #8).
• Fix trendline divide-by-zero behavior for sparse windows.
• Add cache invalidation support for built-in cached indicators.
• Document SMA and EMA warm-up behavior.
• Harden analysis helpers for empty records, invalid periods, zero cost basis, and short trades.
• Update Go module dependencies, including github.com/sdcoffey/big to v0.8.0 and github.com/stretchr/testify to v1.11.1.

• Fixes EMA window calculation (thanks @danhenke and @joelnordell!)

• Add MaximumValue and MinimumValue Indicators
• Add MaximumDrawdownIndicator.

• Add BollingerUpperBandIndicator and BollingerLowerBandIndicator (thanks @shkim!)

• Add TimePeriod#In to modify timezone information
• Add TimePeriod#UTC to set location to UTC

• Add AroonIndicator
• Deprecate Parse for time periods, introduce ParseTimePeriod

• Add MMAIndicator
• Add GainIndicator
• Add LossIndicator
• Fix bug in RSI calculation (fixes #13)

• Fix bug in trendline indicator to prevent low-end index-OOB errors

• Add Trendline indicator
• Update big to v0.4.1