Changes in version 1.8                         

  - Add neast.
  - Add gedist function to remove dependency on sp package.
  - Add primes100k data set to sysdata.rda to remove dependency on
    randtoolbox package.
  - Add nclusters function.
  - Remove nysf and nypoly rda files from data. Replace with functions
    that create them from nysf. This is related to the point below.
  - Remove sp from Depends and move to Suggests.

                         Changes in version 1.7                         

  - Improve efficiency of scan.test and elliptic.test by removing
    redundancies.
  - Replace NEWS file with NEWS.md file
  - Fix bug in scan.test when the population size of each region is
    identical.
  - Add nysf and nysp data sets, along with better descriptions.

                  Changes in version 1.6 (2022-01-31)                   

  - Add constant-risk version of Moran's I.
  - Correct parallel processing bug (thanks to Insang Song).

                  Changes in version 1.5 (2021-10-01)                   

  - Add function to easily extract clusters.

                  Changes in version 1.4 (2021-02-06)                   

  - Add optimal_ubpop for choosing a population upper bound.

                  Changes in version 1.3 (2020-10-07)                   

  - Create flex_zones and flex_test to use C++ code for speed.
  - Add vignette regarding how to use package.

                  Changes in version 1.2 (2020-05-26)                   

  - Update *.test functions to return 'smerc_cluster' class instead of
    'scan' class.
  - Create print, plot, and summary functions for smerc_cluster class.
    Add ex argument to bn.test.
  - Improve speed of flex.zones function.

                  Changes in version 1.1 (2019-09-19)                   

  - Add cepp.test (and related).
  - Fix some documentation.

                  Changes in version 1.0 (2019-07-14)                   

  - Add lots of methods (dc.test, fast.test, mlink.test, rflex.test,
    etc.)
  - Dramatic restructure of many functions.

                 Changes in version 0.4.5 (2018-04-19)                  

  - Fix small bug in computing p-value for bn.test (unmodified).
  - Add test for bn.test (modified).