eva 0.2.7

Bug fixes

• gpdFit(): fixed parameter initialization when starting values are supplied via the start argument; start is now correctly split into scale and shape components instead of being passed through unprocessed (#6).
• Sequential tests: fixed an erroneous double rev() in the ForwardStop / StrongStop computation of gpdSeqTests() and gevrSeqTests(). As a result, pSeqStop() now takes p-values in the order the hypotheses are tested and preserves that order (previously it expected pre-reversed input).
• gevrFit(): the variance-covariance matrix is now computed safely; a singular Hessian returns an NA covariance matrix instead of throwing an error.

Other changes

• gevrFit(): added extendInt = "yes" to the internal uniroot() call to make the moment-based starting value for the shape parameter more robust.
• gpdSeqTests(): clarified documentation that candidate thresholds are tested in the order supplied and should be given from lowest to highest, with an example of applying the ForwardStop rule.
• Added formal package citations for the Statistics and Computing (2017) and Annals of Applied Statistics (2018) papers.
• Vignette now uses SpatialExtremes conditionally (guarded by requireNamespace()) so it builds even when that package is not installed.