ANSITable colsep not applied on left side of first column

[erhhung]

When a table border is shown, no matter what the header or column alignment is set to for the first, left-most, column, the colsep setting, which should be better known as "padding", does not get applied on the left side of that column. For other columns, this setting appears to be working fine.

from ansitable import ANSITable, Column # ansitable 0.9.7

table = ANSITable(
  Column("Column 1", headalign="<", headcolor="white", headstyle="bold", headbgcolor="blue",
                      colalign="<",  colcolor="white",  colstyle="bold",  colbgcolor="blue"),
  Column("Column 2", headalign="^", headcolor="white", headstyle="bold", headbgcolor="blue",
                      colalign="<",  colcolor="light_magenta",            colbgcolor="blue"),
  Column("Date",     headalign="^", headcolor="white", headstyle="bold", headbgcolor="blue",
                      colalign="^",  colcolor="chartreuse_3b"),
  border="thick", bordercolor="cornflower_blue", colsep=4,
)
table.row("hello-world", "1.0.0", "2023-07-28")
table.row("foo-bar",     "0.1.0", "2023-07-28")
table.print()