v0.3.0

Added

• Plot kind qq: sorted values against normal quantiles, one series per array or by= group, with a dashed
  line through each one's quartiles. The quantiles come from Python's statistics, so no scipy is needed.
• Plot kind ridge: density curves stacked top to bottom, one per array or by= group, on one shared height
  scale; overlap= sets the tallest ridge's height in rows. mean and median mark each ridge.
• Plot kind strip: every value as a point, one column per array or by= group, jittered sideways so ties
  stay visible (the same way every run; jitter= sets the spread). Takes mean and ann like box.
• kx.grid(n, cols=3) makes a figure of n panels and returns them as a flat array of axes. Each panel gets
  the theme's figure size, empty cells are removed, and constrained layout leaves room for colorbars and outside
  legends. Other keywords go to plt.subplots.
• kx.save('fig.png') saves the current figure (or the one of a given ax or figure) and returns the path.
  A relative name goes to /kaggle/working on Kaggle and to the current folder elsewhere; missing folders are
  created. Without an extension the theme's format is used, so thesis saves a PDF.
• with kx.context(theme, palette=..., cmap=..., **rc): takes the same arguments as kx.use and puts the
  previous settings back when the block ends, also after an error.
• kx.parse(spec) returns a Spec with kind, theme and flags. Printed, it is the canonical spec string
  (kind, theme, then flags A–Z), and kx.plot takes a Spec wherever it takes a spec string. Mistyped tokens get
  the closest valid ones as a hint.
• kx.plot(df, 'x', 'y', 'z', spec) names DataFrame columns, and by= can name a column. A mistyped column
  gets the closest names as a hint.
• kx.plot(..., **kwargs) passes other keywords to the matplotlib call that draws the kind, over kx's defaults:
  kx.plot(x, y, 'line', linewidth=3). bins= sets the shared hist bins and width= (height= for
  barh) the space each category's bars fill.
• Flags for every kind
  • Layout: legout puts the legend outside on the right, keeping a kind's legend title. rot rotates the x tick
    labels 45°.
  • Axes: logxy (log on both), symlogy (symmetric log y, so negatives work), zero (the value axis includes 0)
    and eq (equal aspect).
  • Number format: pct (0.25 → 25%) and si (1500 → 1.5k) on the value axis, which is x for barh and y
    otherwise.
• Flags for some kinds
  • date for line, step, area, band and scatter: x is read as dates (text works too) and gets compact
    date ticks.
  • mk for line, step, area and band: a marker on every point.
  • sort for bar and barh: largest first, by y, or by the total with stack.
  • ann for bar and barh: the value on each bar, inside each segment with stack.
  • mean and median for hist, kde and ecdf: a dashed / dotted line at each series' mean / median.
    mean for box and violin: a diamond at each mean. ann writes the values.
  • nocb, sym and logc for scatter with a numeric z: no colorbar, colour limits symmetric around 0,
    log colour scale.
• Flags that ask for opposite things (pct and si, logy and logxy, zero and a log y, sym and logc)
  raise an error.

Changed

• The tight flag leaves a figure with constrained layout (such as kx.grid's) alone instead of failing
  when it has a colorbar.

Fixed

• leg and legout on a plot with nothing to label, such as scatter with a numeric z, no longer warn
  "No artists with labels found"; the plot just has no legend.