* Add isBase{32, 58, 64} utils
* Allow empty inputs
* Add base64{Trim, Pad}
* isBase64
* Update assert messages
* Cleaup ifsCompat checks
* Add isBase{32, 58, 64} utils
* Allow empty inputs
* Add base64{Trim, Pad}
* isBase64
* Update assert messages
* Cleaup ifsCompat checks