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siera 0.5.6

• Fixed readARS() crash when ARS metadata contains no referencedAnalysisOperations (continuous-only tables such as shift tables) by ensuring accumulator frames are initialised with their merge key columns.
• Normalised Windows backslashes in ADaM file paths to forward slashes so generated scripts run correctly on both Windows and Unix systems.
• Added CDISC ARD-compliant column stamping: generated scripts now write group[n]_groupingId, group[n]_groupId (for pre-defined groups) and group[n]_groupValue (for data-driven groupings) onto each ARD row.
• Supported arbitrarily deep nesting in mainListOfContents via a recursive LOPA extraction helper, removing the previous three-level hard limit.
• Expanded support for multi-value ARS group conditions (IN/NOTIN) by unnesting condition.value list columns in the JSON parser.
• Coerced *_level columns to character on each individual ARD frame before bind_rows, preventing type conflicts between continuous and categorical analyses.
• Allowed more than three grouping factors per analysis.
• Updated bundled cards_constructs.xlsx example file and extended test coverage across metadata parsing, ADaM loading, and ARD script generation.

siera 0.5.5

• Strengthened analysis method validation with clear errors for missing or undefined MethodId values and warnings when method templates or parameter value sources cannot be resolved.
• Added guardrails for analysis set generation that warn on missing or incomplete metadata and fall back to the unfiltered analysis dataset when needed.
• Tightened ARS metadata ingestion by requiring analysisSets definitions in JSON and the analysis code template sheets in Excel workbooks.
• Expanded test coverage for analysis methods, analysis sets, and data subset condition handling to capture more metadata edge cases.

siera 0.5.4

• Comprehensive testing added: checking generated ARD result values
• added warning messages with cli()
• cover scenarios for bigN vs table-level subsetting

siera 0.5.3

• Cover scenario of multi-value DataSubsets
• Cover scenario of overlapping variables in ADSL merge

siera 0.5.2

• Added conditional operators to cover EQ, NE, GE, GT, LE, LT

siera 0.5.0

• readARS function to ingest xlsx, json and CDISC example

siera 0.4.0

• addition of readARS_xl function
• example added of {cards} in AnalysisMethodCodeTemplate

siera 0.3.0

• dynamic recognition of ADaMs

siera 0.1.0

• Initial CRAN submission.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.