Vec::with_capacity(capacity) panics / aborts when the capacity is too large.
This is a safer alternative which reports Error using tryreserveexact
``` //let's pretend this is an arbitrary number read from a broken file let numberfromfile : usize = 100000000000000;
//try to create a 100TB Vec
let result : Result
//An error is reported assert!(result.is_err()); ```
0.3.0 - removed WcsErrorType * Breaking Change * - changed WcsError to enum again. * Breaking Change * - added tryreserveerror() method to WcsError
0.2.0