20220225 Update to LongDat_1.0.3

Fixed the problem that occurs in the measurement mode.

20220217 Update to LongDat_1.0.2

Fixed the problem that occurs when there is only one feature variable.

20220202 Update to LongDat_1.0.1

Optimized the data preprocess script to make LongDat also applicable to feature with negative values

20220118 Remove in the examples

20220117 Updated the description file

20220113 Updated the description and citation file

20211215 Ready for submission to CRAN

Ran through the checks for the preparation of CRAN submission

Created NEWS.md

Added a NEWS.md file to track changes to the package.