--
* src/gpgmejs.js: Decrypt now parses additional optional dec_info
information, as well as any verify information, if present
* src/permittedOperations: Now decrypt also expect the new return
object dec_inf (containing info such as is_mime and file_name)
--
* src/index.js: The export now uses a freezed Object, which does not
allow for simply overwriting the init method by e.g. a third-party
library.
* BrowsertestExtension: Added some tests trying if decryption of bad
data properly fails