Limit length of WKT in repr

[jorisvandenbossche]

If you have big geometries, checking an array of those quickly completely fills the terminal with its repr. For printing purposes, I think it would be nice to limit the length of the repr (truncate the string after a certain amaount of characters). The to_wkt method is still available to see the full representation.

[caspervdw]

Agreed, maybe 256 characters? Still a lot but not terminal-filling