Merge pull request tealeg#645 from tealeg/fix-issue-644

Check currentRow is set on sheet before persisting it (tealeg#644)

Merge pull request tealeg#643 from tealeg/better-panic-on-closed-sheet

Give a more meaningful panic when trying to use a closed sheet

Modernise row usage

Merge pull request tealeg#587 from tealeg/cell-coords

Rows and Cells can report their coordinates

Merge pull request tealeg#578 from tealeg/issue-574

Make hyperllink loading non destructive

Merge pull request tealeg#577 from tealeg/grow-row-cell-slice-during-…

…load

Grow row cell slice during load

Merge pull request tealeg#555 from tealeg/remove-stream-file-builder

Remove stream file builder

Proper definition of v2 in go.mod

Merge branch 'elimity-com-hyperlinks'

Merge pull request tealeg#475 from tealeg/port-to-go-modules

Port this library to build using Go modules and drop old go versions.