Regenerate gemspec for version 1.0.6
Regenerate gemspec for version 1.0.6

weshatheleopard/rubyXL,parallel588/rubyXL,weshatheleopard/rubyXL,ryanmark/rubyXL,weshatheleopard/rubyXL,parallel588/rubyXL,99cm/rubyXL,ThijsWouters/rubyXL,mezza/rubyXL,99cm/rubyXL,ryanmark/rubyXL,99cm/rubyXL,parallel588/rubyXL,mezza/rubyXL,ryanmark/rubyXL,mezza/rubyXL,ThijsWouters/rubyXL