version 0.9.0
- C-code underlying stringdist and amatch now automatically use multithreading based on openMP. 
  The default number of threads is governed by options('sd_num_thread'). 
- stringdist, stringdistmatrix, amatch and ain gain nthread argument which can overwrite the default maximum number of threads.
- Argument 'maxDist' is phased out for 'stringdist' and 'stringdistmatrix'. Specifying it causes a message.
- Argument 'ncores' is phased out for 'stringdistmatrix'. It is now ignored and specifying it causes a message.
- bugfix in amatch/dl. In certain cases, the best match went undetected.
- Documentation improved and rearranged with string metrics, encoding, and parallelization now documented as separate topics.

version 0.8.2
- Fixed a few warnings issued by the CLANG compiler (thanks to Brian Ripley). This fixes a bug in amatch/jaccard
- Fixed a bug in stringdist/osa, dl: NA incorectly returned (thanks to Lauri Koobas).

version 0.8.1
- stringdistmatrix returns dimensionless matrix when both arguments have length zero (thanks to Richie Cotton)
- stringdistmatrix gains argument 'useNames' (thanks to Richie Cotton)
- Package now 'Imports' parallel rather than 'Depends' on it.
- bugfix in optimal string alignment distance: the nr of transpositions was sometimes overcounted (thanks to Frank Binder)
- rearranged the documentation.

version 0.8.0
- Added soundex-based string distance (thanks to Jan van der Laan)
- New function 'phonetic' translates strings to phonetic codes using soundex (thanks to Jan van der Laan)
- New function 'printable_ascii' detects non-printable ascii or non-ascii characters.
- Precision issue: cosine distance between equal strings would be O(1e-16) in stead of 0.0 (thanks to Ben Haller).
- Code cleaning: somewhat better performance when maxDist is unspecified in stringdist. It remains deprecated.
- Row names in the output array of 'qgrams' are now in system native encoding (used to be utf8 for all systems).
- updated CITATION with page number info as the R Journal is now out.

version 0.7.3
- bugfix in jw-distance: out-of-range access in C-code caused R to crash in some cases (thanks to Carol Gan)
- bugfix in dl distance: in some cases, distances could be one unit too high.
- Updated CITATION file: paper to appear in The R Journal vol 6 (2014).
- Some updates in documentation.

version 0.7.2
- function 'qgrams' gains .list argument
- bugfix in multicore option of stringdistmatrix
- bugfix in substitution weight of DL-distance (undercounted when w4 != 1 in some cases)
- bugfix in dl.c: C-function read outside of array. 

version 0.7.0
- added useBytes option: up to ~3-fold speed gain at the cost of possible encoding-dependent results.
- new memory allocation method for q-grams increases speed between ~5% and ~30% depending on q and input string.
- function 'qgrams' gains useNames option.
- jaro-winkler distance gains weight argument.
- C-code optimization in edit-based distances:  10~20% speed increase depending on input.
- bugfix in amatch: sometimes NA was erroneously returned.
- bugfix in amatch/lcs: hamming distance method was called erroneously.

version 0.6.1
- bugfix in parallel version of stringdistmatrix: parameter p was not passed (thanks to Ricardo Saporta)
- bugfix in lv/osa/dl: maxDist ignored in certain cases

version 0.6.0
- added amatch function: approximate matching version of 'match'
- added ain function: approximate matching version of '%in%'
- qgrams now accepts arbitrary number of arguments. Outputs array, not table
- added cosine distance
- added Jaccard distance
- added Jaro and Jaro-Winkler distances
- small performance tweeks in underlying C code
- Edge case in stringdistmatrix: output is now always of class matrix
- Default maxDist is now Inf (this is only to make it more intuitive and does not break previous code)
- BREAKING CHANGE: output -1 is replaced by Inf for all distance methods


version 0.5.0
- added qgram counting function 'qgrams'
- faster edge case handling in osa method.
- edge case in lv/osa/dl methods: distance returned length(b) in stead of -1 when length(a) == 0, maxDist < length(b).
- bugfix in lv/osa/dl method: maxDist returned when length(a) > maxDist > 0 (thanks to Daniel Reckhard).
- Hamming distance (method='h') now returns -1 for strings of unequal lengts (used to emit error).
- added longest common substring distance (method='lcs').
- added qgram distance method.
- stringdistmatrix gains cluster argument.

version 0.4.2
- Fix in error message for hamming distance
- Workaround for system-dependent translation of utf8 NA characters

version 0.4.0
- First release
