### Performance Improvements

- **[FEATURE]** Add concurrent processing for nested dependencies installation
- **[ENHANCEMENT]** Add retry mechanism for downloading GitHub archives before falling back to git clone
- **[BUGFIX]** Fix concurrency issue when JB_PARALLEL_DOWNLOADS=true was set
- **[ENHANCEMENT]** Refactor the Install function for better maintainability

### Advanced Caching System

- **[FEATURE]** Add global caching system in `~/.cache/jb` to improve performance across projects
- **[FEATURE]** Add cache metadata and indexing for improved organization and retrieval
- **[FEATURE]** Add AWS S3 support for remote caches with full AWS SDK integration
- **[FEATURE]** Implement concurrent cache checking using goroutines for significant performance improvements
- **[FEATURE]** Implement hierarchical cache checking (global → remote) with parallel lookups
- **[FEATURE]** Add cache statistics tracking for performance monitoring
- **[BREAKING]** Remove local cache system in favor of global and remote caches
- **[ENHANCEMENT]** Add new cache management commands with a modern subcommand structure:
  - `jb cache status` - Display cache statistics and health
  - `jb cache flush` - Empty the cache
  - `jb cache add-remote` - Add a remote cache server
  - `jb cache list-remote` - List remote cache servers
  - `jb cache remove-remote` - Remove a remote cache server
  - `jb cache list` - List all cache entries with metadata
- **[ENHANCEMENT]** Add `--no-global-cache` flag to disable global caching
- **[ENHANCEMENT]** Add `JB_CACHE_DIR` environment variable to customize global cache location

### Build and CI Improvements

- **[ENHANCEMENT]** Add arm64 support for macOS binary compilation
- **[ENHANCEMENT]** Enable GitHub Actions for CI/CD
- **[ENHANCEMENT]** Update to support only the latest Go releases
- **[ENHANCEMENT]** Ensure stable transitive dependencies
- **[ENHANCEMENT]** Disable Windows build and ARM 32-bit for Darwin

export JB_PARALLEL_DOWNLOADS=false # the default

Empty cache:
jb update  16.23s user 5.85s system 11% cpu 3:13.62 total

S3 cached:
jb update  9.98s user 3.18s system 19% cpu 1:08.22 total

All cached:
jb update  10.10s user 3.03s system 18% cpu 1:10.90 total

-------------------------------------

export JB_PARALLEL_DOWNLOADS=true

Empty cache:
jb update  16.35s user 6.15s system 18% cpu 2:01.88 total

S3 cached only:
jb update  11.07s user 3.64s system 115% cpu 12.718 total

All cached:
jb update  10.70s user 3.22s system 99% cpu 14.009 total

git clone https://github.com/closeio/jsonnet-bundler.git -b caching

cd jsonnet-bundler/

make static && cp _output/jb ~/bin/jb

jb --version
v0.6.0-29-gbfa8705