Upstream changes:
scales 1.2.0
New features
label_number():
New style_positive and style_negative argument control how positive and negative numbers are styled (#249, #262).
The prefix comes after the negative sign, rather than before it, yielding (e.g) the correct -$1 instead of $-1.
New scale_cut argument enables independent scaling of different parts of the range. This is useful in label_dollar() to support scaling of large numbers by suffix (e.g. “M” for million, “B” for billion). It can be used with cut_short_scale() when billion = thousand million and cut_long_scale() when billion = million million (initial implementation provided by @davidchall). Additionally, the accuracy is now computed per scale category, so rescaled values can have different numbers of decimal places (#339).
label_number_si() is deprecated because it previously used short scale abbreviations instead of the correct SI prefixes. You can mimic the previous results with label_number(scale_cut = cut_scale_short()) or get real SI labels with label_number(scale_cut = cut_SI("m")) (#339, with help from @davidchall).
label_bytes() now correctly accounts for the scale argument when choosing auto units (@davidchall, #235).
label_date() and label_time() gain a locale argument that allows you to set the locale used to generate day and month names (#309).
New label_log() displays the base and a superscript exponent, for use with logarithmic axes (@davidchall, #312).
New compose_trans() allows arbitrary composition of transformers. This is mostly easily achieved by passing a character vector whenever you might previously have passed the name of a single transformer. For example, scale_y_continuous(trans = c("log10", "reverse")) will create a reverse log-10 scale (#287).
Bug fixes and minor improvements
breaks_width() now supports units like "3 months" in the offset argument.
col_quantile() no longer errors if data is sufficiently skewed that we can’t generate the requested number of unique colours (#294).
dollar(negative_parens) is deprecated in favour of style_negative = "parens".
hue_pal() respects h.start once again (#288).
label_number_auto() correctly formats single numbers that are greater than 1e+06 without an error (@karawoo, #321)
manual_pal() now always returns an unnamed colour vector, which is easy to use with ggplot2::discrete_scale() (@yutannihilation, #284).
time_trans() and date_trans() have domains of the correct type so that they can be transformed without error (#298).
Internal precision(), used when accuracy = NULL, now avoids displaying unnecessary digits (@davidchall, #304).
scales 1.1.1
breaks_width() now handles difftime/hms objects (@bhogan-mitre, #244).
hue_pal() now correctly inverts color palettes when direction = -1 (@dpseidel, #252).
Internal precision(), used when accuracy = NULL, now does a better job when duplicate values are present (@teunbrand, #251). It also does a better job when there’s a mix of finite and non-finite values (#257).
New oob_keep() to keep data outside range, allowing for zoom-limits when oob_keep is used as oob argument in scales. Existing out of bounds functions have been renamed with the oob_-prefix to indicate their role (@teunbrand, #255).
ordinal_french() gains plural and gender arguments (@stephLH, #256).
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