Changes

<includeonly>{{rnd/+|{{{1}}}|{{{2}}}|{{rnd/0{{#expr:{{{2}}}>0}}|{{{1}}}|{{{2}}}}}}}</includeonly><noinclude>This template rounds {{{1}}} to {{{2}}} decimal places (goes the other way for negatives), includes trailing zeros & avoids E notation.</noinclude>