#22 fix content generator being nil

update changelog for 1.5.0

feat: add x-scrolling feature finally

feat: add content generator for cell

maint: refactor table.go, separate ordering, separate error, convert sortRows to standalone unmutating function

maint: remove TableSingleType

maint: remove Table.GetOrder, update examples

maint: update error name not to include package name

update sorting order keys constants names

refactor TableStyleKey

refactor TableStyleKey

Merge pull request #18 from tvanriel/master

chore: linter fixes

Update changelog for version v1.4.1

Merge pull request #12 from drmille2/table_content_updating