c14_calibrate not fully vectorised

[joeroe]

Only engine = "rcarbon" is vectorised.

library(c14)

c14_calibrate(c(5000, 6000), c(30, 30), engine = "intcal")
#> Warning in if (age < 0) if (!postbomb) if (!(cc %in% c("nh1", "nh2", "nh3", :
#> the condition has length > 1 and only the first element will be used
#> Warning in error^2 + cc[, 3]^2: longer object length is not a multiple of
#> shorter object length
#> <c14_cal[1]>
#> [1] 5730 cal BP

c14_calibrate(c(5000, 6000), c(30, 30), engine = "rcarbon")
#> Registered S3 method overwritten by 'spatstat.geom':
#>   method     from
#>   print.boxx cli
#> <c14_cal[2]>
#> [1] 5728 cal BP 6846 cal BP

c14_calibrate(c(5000, 6000), c(30, 30), engine = "oxcal")
#> Oxcal doesn't seem to be installed. Downloading it now:
#> Oxcal stored successful at /tmp/RtmpsiTyYO!
#> Oxcal path set!
#> Error in `new_list_of()` at c14/R/cal.R:74:2:
#> ! `x` must be a list.

c14_calibrate(c(5000, 6000), c(30, 30), engine = "bchron")
#> Calibrating curve not provided. Using: intcal20
#> Error in `new_list_of()` at c14/R/cal.R:74:2:
#> ! `x` must be a list.

[joeroe]

5780314 vectorised engine = "intcal".

[joeroe]

And are now just fully broken #24