Resolver One: Changes between 1.2 and 1.3

Major new features

#1623 AllRowsFromIndex and AllColsFromIndex added, making it easy to write usercode that iterates over rows starting from a given index.
#1662 ColsByHeader and RowsByHeader added, providing usercode with easy-to-access dicts of header rows and cols.
#1540 Col/Row.ContentCells added, which skips cells in a header column or row.
#1394 Pasted or typed numbers including comma thousands separators are now recognised as numbers. Also, numbers entered with an implicit unit (eg. a percentage or a currency) now set the cell's unit traits even when recalcs are suspended. Also, drag fill of currencies and percentages now works. Also, postfix currencies now work.
#1512 Added Cell properties Name and FullName.
#1568 Financial Edition: Bloomberg function BDH( ) now accepts the 'FX' property to modify currency of returned values.
#1560 Upgrade to IronPython 1.1.2 (from 1.1.1)

#1706 Empty strings in dropdown cells now work correctly.
#1590 Can now operate on a sheet's selection (eg. set bold) immediately after selecting a sheet. Previously the sheet's selection was visible, but the grid didn't have focus.
#1409 Cell A1 is now selected when new document is created, so you don't need to select cells with the mouse to start editing.
#1588 Grid no longer loses focus when adding new worksheets from usercode.
#1417 Clicking away from a cell being edited on a result worksheet no longer causes an error.
#1678 Worksheet formula cycle errors now displayed correctly
#1613 'minus space float' (eg '- 1.2') is now interpreted as a number.
#1555 Leaving codebox with recalcs suspended no longer aborts current recalc, and throbber no longer erroneously spins after aborting a recalc with recalcs suspended.
#1571 Clear contents always displays cells as cleared in the initial display update.