Raised styling logic; Added aspect ratio and font tweaks; Added random color and alpha options; Added data plotting at coordinates

[omargfh]

New methods

Styling

• pylexis.Diagram.set_font(size, weight): Set font size and weight.

• pylexis.Diagram.set_aspect(aspect): Set aspect ratio of the grid.

  Parameters
  ----------
  aspect: str or float with aspect ratio of the grid. Use 'square' for square cells, 'auto' for equal sized steps on both axes, or a float for a custom ratio.

  ---

Plotting

• pylexis.Diagram.add_data_point(year, age, value): Draw a data point in the grid.

  Parameters
  ----------
  year: int with year of the data point.
  age: int with age of the data point.
  value: string-castable value of the data point.

  ---

• pylexis.Diagram.add_data(year, age, values): Add a list of data points to the Lexis Diagram.

  Parameters
  ----------
  year: list[int] with years of the data points.
  age: list[int] with age of the data points.
  values: list of string-castable values of the data points.

  ---

• pylexis.Diagram.add_data_unsafe(year, age, values): Add a list of data points to the Lexis Diagram without checking if the data fits in the grid.

  Parameters
  ----------
  year: list[int] with years of the data points.
  age: list[int] with age of the data points.
  values: list of string-castable values of the data points.

  ---

• pylexis.Diagram.load_data(data, xaxis, yaxis, value): Load data from a list of dictionaries.

  Parameters
  ----------
  data: list of dictionaries with the data to plot.
  xaxis: str with the key of the dictionary that contains the x-axis data.
  yaxis: str with the key of the dictionary that contains the y-axis data.
  value: str with the key of the dictionary that contains the value of the data point.

  ---

• pylexis.Diagram.save(filename): Save the diagram to a file.

  Parameters
  ----------
  filename: str with the name of the file to save.

Modified Methods

• Added 'random' as option for param color in pylexis.Diagram.lexis_fill
• Added alpha param in method pylexis.Diagram.lexis_fill

Class Modifications

• Added self.fontsize and self.fontweight to standardize font styling across plotted data

README

• Updated README to include the new and updated methods
• Added examples for new methods

[omargfh]

Sounds great!

[cacrespo]

I deleted the images because they became obsolete. The next step is make another PR with Readme.md adjustments. :smile: