Changes in version 0.9.0                        

New features

  - Added dummy_mode parameter to fmri_dataset() and nifti_backend()
    (#3)
      - Allows creation of datasets with non-existent file paths for
        testing
      - Returns placeholder data (zeros) and standard dimensions
      - Useful for testing dependent packages without requiring actual
        data files
      - Enable with dummy_mode = TRUE in fmri_dataset() constructor
  - Replaced the DelayedArray dependency with the lightweight delarr
    lazy matrix adapter
      - fmri_series() and study helpers now return delarr objects by
        default
      - Added as_delarr() generics for all storage backends and study
        adapters
      - Retained optional as_delayed_array() paths for explicit
        DelayedMatrix output

                        Changes in version 0.8.9                        

Critical fixes

  - Added bounded memory cache to prevent unbounded memory growth (#1)
    
      - Memoization now uses cachem with configurable size limit
        (default 512MB)
      - Added fmri_clear_cache() function to manually clear cache
      - Cache size configurable via options(fmridataset.cache_max_mb
        = 1024)

  - Added memory warnings and mitigation for study_backend (#2)
    
      - Warning when operations will load >1GB into memory
      - Automatic chunking for operations that would load >2GB
      - Recommends using data_chunks() for large datasets

                        Changes in version 0.1.0                        

New features

  - Added comprehensive CI/CD pipeline with GitHub Actions
  - Added test coverage reporting with codecov
  - Added code style checking and automatic formatting
  - Added issue and PR templates for better project management
  - Implemented as_tibble.fmri_study_dataset with metadata optimization
  - Added integration and performance tests for fmri_study_dataset
    workflow

Bug fixes

  - Fixed chunking edge case when nchunks > number of voxels
  - Updated deprecated with_mock() calls to with_mocked_bindings()
  - Fixed dimensional consistency issues in storage backends
  - Resolved all test failures from package refactoring

Documentation

  - Added comprehensive README with badges and examples
  - Improved package architecture documentation
  - Added codecov configuration for coverage reporting
  - New vignette "From Single-Subject to Study-Level Analysis" with
    performance guidelines and architectural diagram

Internal changes

  - Refactored monolithic codebase into modular architecture
  - Improved test organization and coverage
  - Enhanced error handling and validation
  - Modernized CI/CD workflows and tooling