* simplify Clojure code by using built-in functions.
* enjoyed Icon programming.

Instead of Haskell, Icon code now does encode INTERCAL.
* separate Go and Groovy generators.
* shorten Perl generator.
* reduce an escape sequence.
* separate NodeJS and ObjC generators.
* insert run-length (de)compression to PHP, CoffeeScript, Boo, and Tcl.
* trivial improvements for Prolog and Logo.
* shorten common functions.
* improve Brainfuck encoding.

The size of QR.bf was much reduced.
* use bf instead of beef.

bf is much faster than beef.
* trivial improvement for ALGOL68.
* make abbrev semi-automatic.
* share code body between C and ObjC.
* shorten LLVMAsm code.
* define a variable for space character.
* merge "program QR" that appears three times
* shorten Jasmin code.
* improve Pascal generator to output shorter code.
* simplify CommonLisp generator.