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Change between versions 0.27 and 0.28

Miguel:
	Print support (imported from the GNUMERIC_PRINT branch).
	Pattern selector works again.
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	Imported Alan's libCSV and rewrwite ff-csv so that it actually works.
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	Add import feature.  Drop some normal loaders and make them importers
	Fixed lots of print stuff.
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Rasca Gmelch:
	HTML import plugin

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Jukka:
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	* Started the implementation of Data Analysis tools
	- Implemented Correlation and Covariance tools
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	- Implemented Descriptive Statistics Tool
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	- Implemented Sampling Tool
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	- Implemented t-Test Tools (paired, assuming equal variance, and
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          assuming unequal variance)
	- Implemented z-Test Tool
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	- Implemented F-Test Tool
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	- Implemented Random Number Generation Tool with the following
	  distributions: Discrete, Normal, and Uniform.
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	* Added the following functions:
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	- FORECAST() and INTERCEPT().
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        * And fixed these functions:
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	- SUMIF() and N().
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Morten:
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	* Found everyones memory leaks
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Michael Meeks's avatar
Michael Meeks committed
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Sean

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Michael
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	* Fixed up function wizard.
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	* Improved Excel writing code 
	  - Formulae should import into Excel.
	  - Text / numbers work nicely.
	* Prettified 'sort' slightly.
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	* Implemented Name support.
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Nick Lamb
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Jody Goldberg
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	* Completed Excel colour handling (Hopefully).
	* Improved Excel format support for formulas.
	* Initial implementation of array formulas.
Michael Meeks's avatar
Michael Meeks committed
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	* Worked on embryonic Excel chart code
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Several translations updated: thanks to our translators

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And lots of bugs fixed.