CHANGES IN VERSION 1.3.0-1.3.2

NEW FEATURES

    o a new argument 'visible' is added to the functions 'add.gdsn',
      'addfile.gdsn' and 'addfolder.gdsn'

    o 'objdesp.gdsn' returns 'encoder' to indicate the compression algorithm

    o add a new function 'system.gds' showing system configuration

    o support efficient random access of zlib compressed data,
      which are composed of independent compressed blocks

    o support LZ4 compression format (http://code.google.com/p/lz4/),
      based on "lz4frame API" of r126

    o allow R RAW data (interpreted as 8-bit signed integer) to replace
      32-bit integer with 'read.gdsn', 'readex.gdsn', 'apply.gdsn',
      'clusterApply.gdsn', 'write.gdsn', 'append.gdsn'

    o a new argument 'target.node' is added to 'apply.gdsn', which allows
      appending data to a target GDS variable

    o more argument checking in 'write.gdsn'

SIGNIFICANT USER-VISIBLE CHANGES

    o add vignettes

    o more Unit tests

BUG FIXES

    o minor fixes

    o gdsfmt_1.3.2 fixes "https://github.com/zhengxwen/gdsfmt/issues/7"


CHANGES IN VERSION 1.1.0
-------------------------

NEW FEATURES

    o add a new function 'is.element.gdsn'

    o allow closing GDS files in 'showfile.gds'

BUG FIXES

    o fully support big-endian systems

    o fix memory leaks in 'cleanup.gds'


CHANGES IN VERSION 1.0.4
-------------------------

NEW FEATURES

    o 'apply.gdsn' and 'clusterApply.gdsn' support characters

    o add a new function 'moveto.gds' to relocate GDS variables

    o add a new function 'diagnosis.gds' to diagnose the GDS file

SIGNIFICANT USER-VISIBLE CHANGES

    o 'apply.gdsn', 'clusterApply.gdsn': make the returned value invisible
      if as.is="none"

    o more options in 'read.gdsn' and 'readex.gdsn'

    o more Unit tests

BUG FIXES

    o fix a bug in 'delete.gdsn': allocated resource is not released
      in the GDS file


CHANGES IN VERSION 1.0.3
-------------------------

NEW FEATURES

    o add two new arguments 'allow.duplicate' and 'allow.fork' to the
      function 'openfn.gds'

    o add a new function 'showfile.gds'

    o allow reading a GDS file simultaneously between multiple forked
      processes (applied in 'mclapply' etc)

    o support the LinkingTo mechanism, via 'R_RegisterCCallable' and
      'R_GetCCallable'


CHANGES IN VERSION 1.0.2
-------------------------

NEW FEATURES

    o add 'size' and 'good' to the returned list from 'objdesp.gdsn'
      indicating the state of GDS node

    o add a new function 'cache.gdsn'

BUG FIXES

    o fix the memory issues reported by valgrind


CHANGES IN VERSION 1.0.1
-------------------------

NEW FEATURES

    o add a new argument 'replace' to the function 'addfile.gdsn', which
      allows replacing the existing variable by a new one

    o add a new function 'addfolder.gdsn' allowing a virtual folder linking
      to other GDS files

    o add 'message' to the returned list from 'objdesp.gdsn', which allows
      tracking error messages or log information

SIGNIFICANT USER-VISIBLE CHANGES

    o remove the argument 'deep' from the function 'cleanup.gds' to
      simplify calling

    o reduce the package size

BUG FIXES

    o backward compatible with unknown or undefined classes in GDS system


CHANGES IN VERSION 1.0.0
-------------------------

NEW FEATURES

    o support long vectors (>= R v3.0), allowing >4G (memory size)
      vectors in R

    o ~20x speedup in reading characters from a GDS file, compared to
      the previous version

    o add a new argument 'replace' to the function 'add.gdsn', which allows
      replacing the existing variable by a new one

    o add a new argument 'simplify' to the functions 'read.gdsn' and
      'readex.gdsn'

SIGNIFICANT USER-VISIBLE CHANGES

    o speed improvement for other primitive data types

    o a warning is given, when a variable with missing characters is written
      to a GDS variable

    o replace all '.C' by '.Call' internally

    o reduce the package size

BUG FIXES

    o improve the function 'objdesp.gdsn'

    o fix a bug in 'delete.gdsn'


CHANGES IN VERSION 0.9.13-0.9.15
-------------------------

BUG FIXES

    o fix an issue of memory leak when a compressor or decompressor is loaded

    o fixes an error in the CITATION file

    o compiler issue fix: Solaris 10

    o uses 'inherits' to check the inheritance of object install 'class() =='


CHANGES IN VERSION 0.9.12
-------------------------

NEW FEATURES

    o support variable-length string (e.g., VStr8)

SIGNIFICANT USER-VISIBLE CHANGES

    o add an argument 'path' to the function 'index.gdsn', which uses
      '/' as a separator

    o support a faster defragmentation algorithm in 'cleanup.gds'

    o 'character' in the function 'add.gdsn' refers to variable-length
      string by default

    o fixed-length strings are "fstring", "fstring16" and "fstring32" in
      the function 'add.gdsn'

    o variable-length string are 'string', 'string16' and 'string32' in
      the function 'add.gdsn'

    o support the 'R.invisible' attribute to hide a GDS node, until
      adding 'all=TRUE' to 'print.gds.class' or 'print.gdsn.class'

    o improve the display of hierarchical structure

    o the argument "storage" in the function 'add.gdsn' is not
      case-sensitive now

BUG FIXES

    o minor bug fix in 'readex.gdsn' when 


CHANGES IN VERSION 0.9.11
-------------------------

NEW FEATURES

    o 'put.attr.gdsn' allows a vector with more than one elements

SIGNIFICANT USER-VISIBLE CHANGES

    o it is more efficient to store a factor variable

    o 'apply.gdsn' is re-written in C/C++

    o the function 'applylt.gdsn' is merged into 'apply.gdsn' now

    o the function 'clusterApplylt.gdsn' is merged into 'clusterApply.gdsn' now

    o improve 'clusterApply.gdsn'

    o S3 class name 'gdsclass' is replaced by 'gds.class'

    o S3 class name 'gdsn' is replaced by 'gdsn.class'

DEPRECATED AND DEFUNCT

    o deprecate 'applylt.gdsn' and 'clusterApplylt.gdsn'

BUG FIXES

    o bug fix: add a folder using 'add.gdsn'


CHANGES IN VERSION 0.9.1-0.9.10
-------------------------

NEW FEATURES

    o add two functions with the support of the parallel package (R 2.14.0):
      'clusterApply.gdsn', 'clusterApplylt.gdsn'

SIGNIFICANT USER-VISIBLE CHANGES

    o change 'wstring' to 'string16' in add.gdsn

    o change 'dwstring' to 'string32' in add.gdsn

    o add RUnit tests

    o support GCC4.7 compiler

BUG FIXES

    o fix warnings

    o fix a bug: correct the dimension size of array data with more
      than two dimensions

    o fix bugs: 'append.gdsn' appends data of bit9, bit10, etc, correctly

    o fix a minor bug of compression stream


CHANGES IN VERSION 0.9.0
-------------------------

    o first release of gdsfmt
