Undocumented number to string conversion in vector sub-indexes

[dgarroDC]

Number vector sub-indexes are converted to strings using std::to_string, leading to odd behavior.

For example, this example displays "dinosaurio" and then "dragón" because 0 is converted to "0.000000", but the reference doesn't suggest this behavior.

[Lartu]

@dvkt could we use the double to string without trailing zeros converter you used for DISPLAY with this issue?

[xvxx]

Yes that should fix it, I just made the change - try out the latest master. The example gist works for me now.

[Lartu]

Yes, that's it! Thank you!