Missing characters

[sylva1717]

Characters é and É are missing from the LATIN 1 charset.

Thanks for the awesome library!

[khuccui2002]

I found some missing unicode characters , please have a look.
Thanks!

//Mising chars
'à' => 'a',
'é' => 'e',
'è' => 'e',
'É' => 'E',
'ì' => 'i',
'ò' => 'o',
'ù' => 'u',

[mikemenard]

Those chars works with GSM.
Try here: https://twiliodeved.github.io/message-segment-calculator/