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They were removed from DryIoc and ImTools packages, but were still present in the source code. \nSo here they are again. \nThis package contains only Union.cs, original ImTools code not included.\n\n---original release notes---\n\n## v4.0.0 Major release\n\n### Breaking changes\n\n`ImMap\u003cV\u003e` type is replaced by `ImHashMap\u003cint, V\u003e`.\nThe implementations of ImMap and ImHashMap are combined into one, reducing the code size, and using all performance optimizations from the both.\nThis change will simplify further performance improvements, testing and bug-fixes. \n\nI have tried to keep the API as similar as possible,\nbut you may expect that some types and methods were renamed, or new overloads were added.\n\n### Performance and memory improvements\n\n- Fewer allocations (~10%), see the benchmarks in project readme\n- Keeping the performance almost the same\n\n### Closed issues\n\n- #41 Add a builder-like capability to the ImHashMap via BuildFromDifferent methods\n- #47 Add output of the ImHashMap as mermaid diagram, e.g. `ToMermaidString` method\n- #48 Merge the ImMap and ImHashMap implementations\n- #50 Optimize Enumerable for the PartitionedHashMap\n- #51 Reduce ImHashMap memory allocations, keeping the speed\n- #52 Add AddSureNotPresent methods to compensate for GetSurePresent methods","dependency_summary":{"total_dependency_groups":2,"target_frameworks":[".NETFramework4.5",".NETStandard2.0"],"total_dependencies":0}},"repo_metadata":{"id":143049278,"uuid":"614692476","full_name":"stone-w4tch3r/ImToolsUnionEdition","owner":"stone-w4tch3r","description":"Extension for ImTools package. 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