Build 3.5.0.0.1 of xlsgen includes the following improvements :

- fix for radar chart formatting details in XLSX files (writing line formatting was ignored)
- better round-trip of stand-alone chart sizes in XLSX files
- better reading of line colors from XLSX charts (theme versus style case)
- round-tripping of chart styles in XLSX files ([1,48])
- improved fidelity of algorithm for computing luminance offsets in charts
- fix for rendering up/down bars in stock charts (borders were not drawn)