add tests for 0.63
typo
add tests for 0.63
0.63 all tests pass
add examples/chart_data_tools.rb
add v0.63.0 comments.
set version to v0.63.0
Merge branch '0.63'

Conflicts:
	test/regression/test_chart_errorbars03.rb
	test/regression/test_chart_errorbars04.rb
	test/regression/test_chart_errorbars05.rb
	test/regression/test_chart_errorbars06.rb
	test/regression/test_chart_errorbars07.rb
	test/regression/xlsx_files/chart_errorbars07.xlsx