chart.rb : add params_to_font method to reduce convert_font_args method's line.
chart.rb : remove '=' in conditional.
refactoring Chart#get_data_id -> Chart#data_id
chart.rb : refactoring get_swe_line_pattern and get_swe_line_weight
add palette_color method to utility.rb
rename get_color to color
add ChartArea class.
Axis#gridline_properties : call line_properties directly from module.
use namespace Writexlsx::Series
use Marker, Trendline, Errorbars methods.
typo
use Point class.
remove write_lines_base()
change namespace from Writexlsx::Series (Chartline etc.) to Writexlsx::Chart::Series
use Chartline in @up_down_bars
use Chartline on @hi_low_lines and @drop_lines
chart.rb : add write_lines_base()
use Gridline class.
remove [:_line] access.
use Chartline.line_defined?, fill_defined?