Changes in 0.4.2
- fix CAN-2005-1849 for embedded zlib
- obey -s flag

Changes in 0.4.1
- security fix from zlib-1.2.2
- generate RFC 1123 date strings in HTTP requests
- include port numbers in Host headers
- be slightly more accepting in proxy URL syntax
- don't generate Accept-Ranges headers

Changes in 0.4.0
- now considered beta instead of alpha quality
- fixed incorrect 100%/done display of progress bar when cleanly disconnected before end by server
- updated autoconf/automake scripts

Changes in 0.3.3
- build in gzip in zsyncmake which produces .gz files optimised for zsync
- quickly stop downloading from a URL producing bad data
- -k option to keep the .zsync file, and redownload only when it changes
- fixes some possible crashes that could occur with unexpected remote responses

Changes in 0.3.2
- automatically decompress local seed data when this is appropriate
- progress bars with rate and ETA for all downloads
- automatically recompress downloaded file if possible
- deal better with local .zsyncs containing relative URLs

Changes in 0.3.1
- fix SEGV when downloading with no local data found
- fix failure when incomplete final block of uncompressed stream is unknown
- fix some memory leaks

Changes in 0.3.0
- fix endian check in libhash (works on FreeBSD again)
- major code reorganisation

Changes in 0.2.3
- fix crash in zsyncmake with short files
- "negative" hash table used to speed up processing

Changes in 0.2.2
- complete support for stored blocks in gzip files
- update block size recommendations in man page

Changes in 0.2.1
- fixed bug where zsync would loop if fed more than one local source file
- enabled zsync to handle gzip files containing stored (uncompressed) blocks (so we should do slightly better on gzipped binaries now - but this is still incomplete and will not work for all files)

Changes in 0.2.0
- major reduction in the size of the control file, due to some new optimisations 
- further fixes for servers refusing to do multipart/byteranges responses

Changes in 0.1.6
- fixes some problems with compressed file downloads and unusual server responses
- improved http_proxy parsing

Changes in 0.1.5
- fixes some minor HTTP problems

Changes in 0.1.4
- fixed compilation with gcc-3.4

Changes in 0.1.3
- HTTP proxy support
- better HTTP support - we deal better with unusual server responses

Changes in 0.1.2
- fixes for Solaris/sparc

Changes in 0.1.1
- more efficient compressed stream support
- code cleanups

Changes in 0.1.0
- finished the cleanup of the compressed file transfer code
- major improvement in efficiency for compressed file transfers
- OpenSSL is no longer required
- now under the v2 Artistic License

Changes in 0.0.6
- just code cleanups and documentation updates

Changes in 0.0.5
- switch to OpenSSL's MD4 code
- fix checksumming at stream end
- fix various portability problems

Changes in 0.0.4
- relative URLs in .zsync files supported
- HTTP redirects are followed for the metafile
- now uses both compressed and uncompressed sources to further reduce download sizes

Changes in 0.0.3
- fix HTTP connection termination handling
- speed up local file reading

Changes in 0.0.2
- HTTP/1.1, with pipelining
- cleaning up more of the libc streams and mmap clutter
- progress displays
- lots of bugfixes

First release 0.0.1.