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Pint Changelog
==============
0.9 (unreleased)
----------------
- Add support for registering with matplotlib's unit handling
(Issue #317, thanks dopplershift)
- Add converters for matplotlib's unit support.
(Issue #317, thanks Ryan May)
- Fix unwanted side effects in auto dimensionality reduction.
(Issue #516, thanks Ben Loer)
- Allow dimensionality check for non Quantity arguments.
- Make Quantity and UnitContainer objects hashable.
(Issue #286, thanks Nevada Sanchez)
- Fix unit tests errors with numpy >=1.13.
(Issue #577, thanks cpascual)
- Avoid error in in-place exponentiation with numpy > 1.11.
(Issue #577, thanks cpascual)
- fix compatible units in context.
(thanks enrico)
- Added warning for unsupported ufunc.
(Issue #626, thanks kanhua)
- Improve IPython pretty printers.
(Issue #590, thanks tecki)
- Drop Support for Python 2.6, 3.0, 3.1 and 3.2.
(Issue #567)
0.8.1 (2017-06-05)
------------------
- Add support for datetime math.
(Issue #510, thanks robertd)
- Fixed _repr_html_ in Python 2.7.
(Issue #512)
- Implemented BaseRegistry.auto_reduce_dimensions.
(Issue #500, thanks robertd)
- Fixed dimension compatibility bug introduced on Registry refactoring
(Issue #523, thanks dalito)
0.8 (2017-04-16)
----------------
- Refactored the Registry in multiple classes for better separation of concerns and clarity.
- Implemented support for defining multiple units per `define` call (one definition per line).
(Issue #462)
- In pow and ipow, allow array exponents (with len > 1) when base is dimensionless.
(Issue #483)
- Wraps now gets the canonical name of the unit when passed as string.
(Issue #468)
- NumPy exp and log keeps the type
(Issue #95)
- Implemented a function decorator to ensure that a context is active (with_context)
(Issue #465)
- Add warning when a System contains an unknown Group.
(Issue #472)
- Add conda-forge installation snippet.
(Issue #485, thanks stadelmanma)
- Properly support floor division and modulo.
(Issue #474, thanks tecki)
- Measurement Correlated variable fix.
(Issue #463, thanks tadhgmister)
- Implement degree sign handling.
(Issue #449, thanks iamthad)
- Change `UndefinedUnitError` to inherit from `AttributeError`
(Issue #480, thanks jhidding)
- Simplified travis for faster testing.
- Fixed order units in siunitx formatting.
(Issue #441)
- Changed Systems lister to return a list instead of frozenset.
(Issue #425, thanks GloriaVictis)
- Fixed issue with negative values in to_compact() method.
(Issue #443, thanks nowox)
- Improved defintions.
(Issues #448, thanks gdonval)
- Improved Parser to support capital "E" on scientific notation.
(Issue #390, thanks javenoneal)
- Make sure that prefixed units are defined on the registry when unpickling.
(Issue #405)
- Automatic unit names translation through babel.
(Issue #338, thanks alexbodn)
- Support pickling Unit objects.
(Issue #349)
- Add support for wavenumber/kayser in spectroscopy context.
(Issue #321, thanks gerritholl)
- Improved formatting.
(thanks endolith and others)
- Add support for inline comments in definitions file.
(Issue #366)
- Implement Unit.__deepcopy__.
(Issue #357, thanks noahl)
- Allow changing shape for Quantities with numpy arrays.
(Issue #344, thanks tecki)
0.7.2 (2016-03-02)
------------------
- Fixed backward incompatibility problem when parsing dimensionless units.
0.7.1 (2016-02-23)
------------------
- Use NIST as source for most of the unit information.
- Added message to assertQuantityEqual.
- Added detection of circular dependencies in definitions.
0.7 (2016-02-20)
----------------
- Added Systems and groups.
(Issue #215, #315)
- Implemented references for wraps decorator.
(Issue #195)
- Added check decorator to UnitRegistry.
(Issue #283, thanks kaidokert)
- Added compact conversion.
(See #224, thanks Ryan Dwyer)
- Added compact formating code.
(Issue #240)
- New Unit Class.
(thanks Matthieu Dartiailh)
- Refactor UnitRegistry.
(thanks Matthieu Dartiailh)
- Move definitions, errors, and converters into their own modules.
(thanks Matthieu Dartiailh)
- UnitsContainer is now immutable
(Issue #202, thanks Matthieu Dartiailh)
- New parser and evaluator.
(Issue #226, thanks Aaron Coleman)
- Added support for Unicode identifiers.
- Added m_as as way top retrieve the magnitude in different units.
(Issue #227)
- Added Short form for magnitude and units.
(Issue #234)
- Improved deepcopy.
(Issue #252, thanks Emilien Kofman)
- Improved testing infrastructure.
- Improved docs.
(thanks Ryan Dwyer, Martin Thoma, Andrea Zonca)
- Fixed short names on electron_volt and hartree.
- Fixed definitions of scruple and drachm.
(Issue #262, thanks takowl)
- Fixed troy ounce to 480 'grains'.
(thanks elifab)
- Added 'quad' as a unit of energy (= 10**15 Btu).
(thanks Ed Schofield)
- Added "hectare" as a supported unit of area and 'ha' as the symbol for hectare.
(thanks Ed Schofield)
- Added peak sun hour and Langley.
(thanks Ed Schofield)
- Added photometric units: lumen & lux.
(Issue #230, thanks janpipek)
- A fraction magnitude quantity is conserved
(Issue #323, thanks emilienkofman)
- Improved conversion performance by removing unnecessart try/except.
(Issue #251)
- Added to_tuple and from_tuple to facilitate serialization.
- Fixed support for NumPy 1.10 due to a change in the Default casting rule
(Issue #320)
- Infrastructure: Added doctesting.
- Infrastructure: Better way to specify exclude matrix in travis.
0.6 (2014-11-07)
----------------
- Fix operations with measurments and user defined units.
(Issue #204)
- Faster conversions through caching and other performance improvements.
(Issue #193, thanks MatthieuDartiailh)
- Better error messages on Quantity.__setitem__.
(Issue #191)
- Fixed abbreviation of fluid_ounce.
(Issue #187, thanks hsoft)
- Defined Angstrom symbol.
(Issue #181, thanks JonasOlson)
- Removed fetching version from git repo as it triggers XCode installation on OSX.
(Issue #178, thanks deanishe)
- Improved context documentation.
(Issue #176 and 179, thanks rsking84)
- Added Chemistry context.
(Issue #179, thanks rsking84)
- Fix help(UnitRegisty)
(Issue #168)
- Optimized "get_dimensionality" and "get_base_name".
(Issue #166 and #167, thanks jbmohler)
- Renamed ureg.parse_units parameter "to_delta" to "as_delta" to make clear.
that no conversion happens. Accordingly, the parameter/property
"default_to_delta" of UnitRegistry was renamed to "default_as_delta".
(Issue #158, thanks dalit)
- Fixed problem when adding two uncertainties.
(thanks dalito)
- Full support for Offset units (e.g. temperature)
(Issue #88, #143, #147 and #161, thanks dalito)
0.5.2 (2014-07-31)
------------------
- Changed travis config to use miniconda for faster testing.
- Added wheel configuration to setup.cfg.
- Ensure resource streams are closed after reading.
- Require setuptools.
(Issue #169)
- Implemented real, imag and T Quantity properties.
(Issue #171)
- Implemented __int__ and __long__ for Quantity
(Issue #170)
- Fixed SI prefix error on ureg.convert.
(Issue #156, thanks jdreaver)
- Fixed parsing of multiparemeter contexts.
(Issue #174)
0.5.1 (2014-06-03)
------------------
- Implemented a standard way to change the registry used in unpickling operations.
(Issue #148)
- Fix bug where conversion would fail due to caching.
(Issue #140, thanks jdreaver)
- Allow assigning Not a Number to a quantity array.
(Issue #127)
- Decoupled Quantity in place and not in place unit conversion methods.
- Return None in functions that modify quantities in place.
- Improved testing infrastructure to check for unwanted warnings.
- Added test function at the package level to run all tests.
0.5 (2014-05-07)
----------------
- Improved test suite helper functions.
- Print honors default format w/o format().
(Issue #132, thanks mankoff)
- Fixed sum() by treating number zero as a special case.
(Issue #122, thanks rec)
- Improved behaviour in ScaleConverter, OffsetConverter and Quantity.to.
(Issue #120)
- Reimplemented loading of default definitions to allow Pint in a cx_freeze or similar package.
(Issue #118, thanks jbmohler)
- Implemented parsing of pretty printed units.
(Issue #117, thanks jpgrayson)
- Fixed representation of dimensionless quantities.
(Issue #112, thanks rec)
- Raise error when invalid formatting code is given.
(Issue #111, thanks rec)
- Default registry to lazy load, raise error on redefinition
(Issue #108, thanks rec, aepsil0n)
- Added condensed format.
(Issue #107, thanks rec)
- Added UnitRegistry () operator to parse expression replacing [].
(Issue #106, thanks rec)
- Optional case insensitive unit parsing.
(Issue #105, thanks rec, jeremyfreeman, dbrnz)
- Change the Quantity mutability depending on magnitude type.
(Issue #104, thanks rec)
- Implemented API to list compatible units.
(Issue #89)
- Implemented cache of key UnitRegistry methods.
- Rewrote the Measurement class to use uncertainties.
(Issue #24)
0.4.2 (2014-02-14)
------------------
- Python 2.6 support
(Issue #96, thanks tiagocoutinho)
- Fixed symbol for inch.
(Issue #102, thanks cybertoast)
- Stop raising AttributeError when wrapping funcs without all of the attributes.
(Issue #100, thanks jturner314)
- Fixed warning appearing in Py2.x when comparing a Numpy Array with an empty string.
(Issue #98, thanks jturner314)
- Add links to AUR packages in docs.
(Issue #91, thanks jturner314)
- Fixed garbage collection related problem.
(Issue #92, thanks jturner314)
0.4.1 (2014-01-12)
------------------
- Integer Division with Arrays.
(Issue #80, thanks jdreaver)
- Improved Documentation.
(Issue #83, thanks choloepus)
- Removed 'h' alias for hour due to conflict with Planck's constant.
(Issue #82, thanks choloepus)
- Improved get_base_units for non-multiplicative units.
(Issue #85, thanks exxus)
- Refactored code for multiplication.
(Issue #84, thanks jturner314)
- Removed 'R' alias for roentgen as it collides with molar_gas_constant.
(Issue #87, thanks rsking84)
- Improved naming of temperature units and multiplication of non-multiplicative units.
(Issue #86, tahsnk exxus)
0.4 (2013-12-17)
----------------
- Introduced Contexts: relation between incompatible dimensions.
(Issue #65)
- Fixed get_base_units for non multiplicative units.
(Related to issue #66)
- Implemented default formatting for quantities.
- Changed comparison between Quantities containing NumPy arrays.
(Issue #75) - BACKWARDS INCOMPATIBLE CHANGE
- Fixes for NumPy 1.8 due to changes in handling binary ops.
(Issue #73)
0.3.3 (2013-11-29)
------------------
- ParseHelper can now parse units named like python keywords.
(Issue #69)
- Fix comparison of quantities.
(Issue #74)
- Fix Inequality operator.
(Issue #70, thanks muggenhor)
- Improved travis configuration.
(thanks muggenhor)
0.3.2 (2013-10-22)
------------------
- Fix get_dimensionality for non multiplicative units.
(Issue #66)
- Proper handling of @import directive inside a file read using pkg_resources.
(Issue #68)
0.3.1 (2013-09-15)
------------------
- fix right division on python 2.7
(Issue #58, thanks natezb)
- fix formatting of fractional exponentials between 0 and 1.
(Issue #62, thanks jdreaver)
- fix installation as egg.
(Issue #61)
- fix handling of strange values as input of Quantity.
(Issue #53)
- math operations between quantities of different registries now raise a ValueError.
(Issue #52)
0.3 (2013-09-02)
----------------
- support for IPython autocomplete and rich display.
(Issues #30 and #31)
- support for @import directive in definitions file.
(Issue #22)
- support for wrapping functions to make them pint-aware.
(Issue #16)
- support for comparing UnitsContainer to string.
(Issue #35)
- fix error raised while converting from a single unit to one expressed as
the relation between many.
(Issue #29)
- fix error raised when unit symbol is missing.
(Issue #41)
- fix error raised when magnitude is Decimal.
(Issue #46, thanks danielsokolowski)
- support for non-installed pint.
(Issue #42, thanks danielsokolowski)
- support for application of numpy function on non-ndarray magnitudes.
(Issue #44)
- support for math operations on dimensionless Quantities (written with units).
(Issue #45)
- fix obtaining dimensionless quantity from string.
(Issue #50)
- fix adding and comparing numbers to a dimensionless quantity (written with units).
(Issue #54)
- Support for iter in Quantity.
(Issue #55, thanks natezb)
0.2.1 (2013-07-02)
------------------
- fix error raised while converting from a single unit to one expressed as
the relation between many.
(Issue #29)
0.2 (2013-05-13)
----------------
- support for Measurement (Quantity +/- error).
- implemented buckingham pi theorem for dimensional analysis.
- support for temperature units and temperature difference units.
- parser can infers if the user mean temperature or temperature difference.
- support for derived dimensions (e.g. [speed] = [length] / [time]).
- refactored the code into multiple files.
- refactored code to isolate definitions and converters.
- refactored formatter out of UnitParser class.
- added tox and travis config files for CI.
- comprehensive NumPy testing including almost all ufuncs.
- full NumPy support (features is not longer experimental).
- fixed bug preventing from having independent registries.
(Issue #10, thanks bwanders)
- forces real division as default for Quantities.
(Issue #7, thanks dbrnz)
- improved default unit definition file.
(Issue #13, thanks r-barnes)
- smarter parser supporting spaces as multiplications and other nice features.
(Issue #13, thanks r-barnes)
- moved testsuite inside package.
- short forms of binary prefixes, more units and fix to less than comparison.
(Issue #20, thanks muggenhor)
- pint is now zip-safe
(Issue #23, thanks muggenhor)
Version 0.1.3 (2013-01-07)
--------------------------
- abbreviated quantity string formating.
- complete Python 2.7 compatibility.
- implemented pickle support for Quantities objects.
- extended NumPy support.
- various bugfixes.
Version 0.1.2 (2012-08-12)
--------------------------
- experimenal NumPy support.
- included default unit definitions file.
(Issue #1, thanks fish2000)
- better testing.
- various bugfixes.
- fixed some units definitions.
(Issue #4, thanks craigholm)
Version 0.1.1 (2012-07-31)
--------------------------
- better packaging and installation.
Version 0.1 (2012-07-26)
--------------------------
- first public release.