Log Message:
libspectrum 1.3.5:
* Add Multiface One/128/3 support
* Add self-inflating buffer for writing binary files
* Add class recognition for SCR files
* Fix crash when saving CSW tapes
* Various minor bug fixes/improvements:
  * Add unit test for CSW writing
  * Swich to using autoreconf
  * Use silent builds by default
  * Remove more const qualifiers from libspectrum_buffer API
  * Fix GCC warnings about unexpected values in switch statements
  * Remove unsused variables from libspectrum_buffer refactoring
  * Fix error messages when reading Opus/+D chunks from SZX files
  * Distribute standard-tap.tap
  * Set logical '1' when reading SZX flags
  * Document Multiface snap accessors