Add name argument to add_TA

[SamoPP]

Description

It would be nice to have a name argument in add_TA function (instead of lenv$name <- deparse(substitute(x))).

Expected behavior

Instead of using lenv$name <- deparse(substitute(x)) function argument name (if set, not NULL) would be used.

Minimal, reproducible example

[Insert your sessionInfo() output]

[joshuaulrich]

I just noticed that this is similar to #205. add_TA() and add_Series() have a legend argument to set the name. I'm going to update this fix to remove the name argument it added and make the fix using the legend argument.

[joshuaulrich]

I changed my mind. I tried to pass user-supplied 'legend' values through the plotting functions, but it didn't work seamlessly like it does when passing the 'name' argument. So I'm keeping this fix instead of doing what I said in my previous comment.