rebuild vignette for the spatial granger causality test method

Merge pull request #951 from SpatLyu/v2.0

eliminate default initialization pollution from NaN-skipped elements in library and prediction sets

Merge pull request #945 from SpatLyu/v2.0

include scpcm and its vignette linker

Merge pull request #916 from SpatLyu/v2.0

complement documentation for `lib` and `pred` parameters in `fnn` generic

Merge pull request #781 from SpatLyu/v2.0

keep only R CMD check report info in CRAN comment file

rebuild vignette of the `spEDM` package introduction

prepare CRAN submission: clarify NOTE on possibly misspelled words

submit spEDM `1.5` to cran

Merge pull request #167 from SpatLyu/v2.0

rebuild `gccm` vignette

Merge pull request #130 from stscl/dev

ready to release `spEDM` 1.3