List of months support

[dat-lequoc]

Hello,

Thank you very much for the super cool package.

I would like to inquire whether it's possible to select specific months for plotting by passing a list of months. For instance, I'd like to plot only the months [10, 11, 12], without plotting the whole the year.
Currently, I can achieve this by calling month_plot() three times, like so:

from mpl_toolkits.axes_grid1 import Grid
fig = plt.figure()
grid = Grid(fig, rect=111, nrows_ncols=(1,3),
            axes_pad=0.25, label_mode='L',
            )
for i, ax in enumerate(grid):
    july.month_plot(dates_list, data, month=months[i], value_label=True, ax=ax)