js: improve decryption performance

--
* src/Connection.js, src/Helpers.js: performance of decoding incoming
  base64 data was improved to about 4 times the speed by introducing
  two more efficient functions (thanks to [email protected] for
  finding and testing them)

* src/gpgmejs.js: Decrypted data will now return as Uint8Array, if the
  caller does not wish for a decoding. Decoding binary data will return
  invalid data, and a Uint8Array may be desired. This can be indicated
  by using the (new) 'binary' option in decrypt.

* src/Errors.js A new error in case this decoding fails

* src/Message.js, src/Connection.js: expected is change from base64
  to binary, to avoid confusion later on.

1 files changed, 1 insertions, 1 deletions

diff --git a/lang/js/src/Message.js b/lang/js/src/Message.js
index b83caf6d..48813df7 100644
--- a/lang/js/src/Message.js
+++ b/lang/js/src/Message.js
@@ -64,7 +64,7 @@ export class GPGME_Message {
     }
 
     set expected (value){
-        if (value === 'base64'){
+        if (value === 'binary'){
             this._expected = value;
         }
     }