Fix for tables added in non-sequential order. Closes #51.
Minor doc fix.
Added clarification to docs on table formulas. Closes #52.
Added clarification about formulas language. Closes #49.
Minor fix to array formula.
Added docs for utility functions.

Closes #48.
Added note to conditional_formatting() docs about absolute ranges.

Closes #47.
Added note to conditional_formatting() docs about missing properties.

Closes #55.
Fixed issue when applying markers to straight scatter chart.

Close #54.
Prep for relase 0.4.4
Minor code cleanup.
Initial code for tick alignment.
Minor doc fix.
Renamed position axis proprety.
Allow a list of values to be used for chart names.
Added docs for position_axis.
Added docs for chart names as lists.
Prep for relase 0.4.5