# xxdi 1.3.1

* Major performance upgrades.
* Fixed issue where sometimes an inaccurate list of core keywords/categories were printed.

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# xxdi 1.3.0

* Introduced different variants of the xd-index, such as fractional, field-normalised, and the inverse variance weighted xd-index.

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# xxdi 1.2.4

* Minor performance upgrades.

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# xxdi 1.2.3

* Small update to integrated functions.

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# xxdi 1.2.0

* Added options to compute h-type and g-type values of x-type indices.

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# xxdi 1.1.0

* Added function 'xc_index' for calculating xc-index.
* Added a generic function 'xdc_index' which can be used to calculate x-index, xd-index, and xc-index.
* Added functions 'h_index' and 'g_index' for calculating h-index and g-index respectively.
* Optimised functions for better performance and faster run times.
* Fixed author's ORCiD.

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# xxdi 1.0.0

* Added new functionality for visualising plots for x- and xd-indices. 
* Subtle changes in first examples of x- and xd-indices. Default delimiter ";" not included in example 1 anymore. Examples updated to demonstrate plotting parameter.

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# xxdi 0.0.1

* Initial CRAN submission.
