v1.10.0 - Real-rate, growth & external-sector indicators

A purely additive release: 7 new derived indicators and 5 new curated
concepts, with no breaking changes to any tool or response shape.

✨ Added

Transparent, formula-based series available via get_derived_series:

Concept	Formula	Frequency
`real_10y_bond_yield`	10y AGS yield − monthly CPI inflation	Monthly
`real_bank_bill_rate`	3m bank bill rate − monthly CPI inflation	Monthly
`real_business_lending_rate`	Small-business lending rate − monthly CPI inflation	Monthly
`broad_money_growth`	Year-ended growth of broad money	Monthly
`employment_growth`	Year-ended growth of employment	Monthly
`misery_index`	Unemployment rate + monthly CPI inflation	Monthly
`terms_of_trade`	100 × export price index / import price index	Quarterly

Analyst-friendly shortcuts available via get_economic_series:

Release description (markdown)

A purely additive release: 7 new derived indicators and 5 new curated
concepts, with no breaking changes to any tool or response shape.

Transparent, formula-based series available via get_derived_series:

Concept	Formula	Frequency
`real_10y_bond_yield`	10y AGS yield − monthly CPI inflation	Monthly
`real_bank_bill_rate`	3m bank bill rate − monthly CPI inflation	Monthly
`real_business_lending_rate`	Small-business lending rate − monthly CPI inflation	Monthly
`broad_money_growth`	Year-ended growth of broad money	Monthly
`employment_growth`	Year-ended growth of employment	Monthly
`misery_index`	Unemployment rate + monthly CPI inflation	Monthly
`terms_of_trade`	100 × export price index / import price index	Quarterly

Analyst-friendly shortcuts available via get_economic_series:

export_price_index — ABS International Trade Price Index, exports (all groups)
import_price_index — ABS International Trade Price Index, imports (all groups)
household_debt_to_income — RBA E2, household debt to annualised disposable income
labour_productivity — RBA H4, non-farm labour productivity per hour (index)
real_twi — RBA F15, real trade-weighted index

Year-ended growth derivations (credit_growth, broad_money_growth,
employment_growth) now handle RBA monthly series that arrive as end-of-month
ISO dates (YYYY-MM-DD) in addition to ABS YYYY-MM periods, instead of
raising a period-format error.

No breaking changes. All existing tools, concepts, and the
{metadata, series, observations} response contract are unchanged.