Version 219 is out.

Hi all,

TXR 219 is out. Binaries at Bintray.

• New SHA-256 and CRC-32 functions.
• Base-64 functions work with buffers now, not only strings.
• Further improvements in sequence genericity in the library.
• Buffers and carrays are now considered sequences.
• defset macro now binds new-value argument to temporary variable, so users of defset don't have to eschew multiple insertions of it into the template.
• in function's testfun and keyfun arguments now work with hashes.
• Two regressions in lnew operator fixed.
• seq-begin works as documented now with non-list sequences.
• Variable binding mix-up in :key parameter macro fixed.
• Fixed wrong polarity of at-exit-do-not-call function's Boolean return value

Cheers ...