string documentation: PDD and docs/strings.pod

hi,

it seems that there is overlap in the strings pdd (28) and the strings
implementation document in docs/strings.pod.

I'm not sure if this is a good idea; I think these should be merged.

If so, I'll open a ticket to do so (but wanted to check first)

kjs

• string documentation: PDD and docs/strings.pod by Klaas-Jan Stol
• Re: string documentation: PDD and docs/strings.pod by Allison Randal