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changelog added for v1.73

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Hans Dembinski 2020-04-09 16:59:22 +02:00
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[section:history Revision history]
[heading Boost 1.73]
* New features
* `reduce` algorithm
* `reduce` now supports positional commands
* `category` axis now supports `slice` command
* New `crop` command, like `shrink`, but discards content of removed bins
* renamed `reduce_option` to `reduce_command` (old name available but deprecated)
* accumulators
* New `count` accumulator, a thin wrapper around a primitive arithmetic type; serves as a base class for users who want to add arbitrary metadata to each bin
* `sum` gained a `value()` method for consistency with other accumulators
* `sum` gained a new argument, allowing users to select whether to sum over all bins or only the inner bins (excluding underflow and overflow)
* axis traits
* New traits `is_ordered` and `ordered` to distinguish between different kinds of DiscreteAxis types; used internally to handle `category` axis and `integer` axis differently
* renamed `static_options` to `get_options` and `static_is_inclusive` to `is_inclusive` (old names available but deprecated)
* Fixes
* Fixed failing ODR test in bundled Boost due to wrong paths
* Fixed a bug in histogram::operator*= that could occur in user-defined accumulators
* Fixed a bug in `indexed` which could cause arithmetic past the end position
* Fixed a bug where the variance in `accumulators::weighted_sum` was not correctly computed if a normal histogram was added to the histogram that used `accumulators::weighted_sum`
* Fixed a bug where compiling with `-ffast-math` would break `accumulators::sum`
* Fixed `algorithm::reduce` to work with axes without *flow bins, which did not compile before
* Other
* Added an example and documentation on how to use Boost.Histogram as a backend
* Improved the docs on how to use custom accumulators and Boost.Accumulators
* Many small documentation improvements
* Improved docs for `algorithm::reduce`
* Improved experimental cmake build support
* Use `index_type` consistently everywhere instead of raw `int`
* Benchmark update in the docs
[heading Boost 1.72]
* New features