See CHANGELOG.txt for version details
Removed 32bit version from Linux distribution, if you need it check 1.90.08 version
Linux version now can write STLs (3D printable output)
Made transcoding of large images faster by speeding up generation of meta data
Rewrote the hinting system for the interpreter, sanity checks, check for invalid hints
New option -M noProxyTextWithAltException, same as -M noProxyText but will apply alternate text from source
New option -M writeAltText  Will use the 16-bits values in the source text in Type 0 and CID fonts to generate 
'Actual text', so PDF results contain an alternate respresentation for text search and 
copy&paste operations. 
New option -M writePSG2U for PS output, will generate Unicode hints for Distiller
Updated JPEGlib to 9d
Updated TIFFlib to 4.10
Updated PNGlib to 1.2.59
Updated Lcms to 2-2.11
Updated Freetype to 2.11.1
Reenabled PNG output (was accidentially turned of in -4 build)
Limiting Hints that are generated for Type1C and TTF CID to base level, controlled by -M limitHints 
Improved PDFA Info generation (-M withPDFAInfo)
Option -M defaultall now tries to load the 'default_cmyk_profile.icm' from the profile folder for CMYK conversion
Setting doc info from script or command line now always overrides source
Fix for malformed TrueType fonts with different glyph numbers in 'post' and 'maxp' tables
In normal PDF output image smasks are now preserved, new option -M noSMasks to force flattening smasks. SMasks are always flattened in case of PDF/X-1/3 and PDF/A-1b output.
New option -M preserveJPEG to keep JPEG data unchanged through conversion
Various fixes to interpreter, improved compatibility
Converting an empty PDF with no pages will not cause a PStill to crash/exit anymore, instead an error is reported
More efficient PDF output, creating smaller files
Build environment changed to VC2012, VC2012 x86 redist is now autoinstalled by installed if required
Individual page size option now also writes /Rotate key to Page object
Security fixes to pdf parser/renderer, updated libraries to current versions
Updated FLTK, rewrite of the GUI, fixing visibility issues for ATI and newer NVIDIA drivers
Added option -M withPDFAInfo, can be set for the GUI in PStillConfig.inf
Improved image transparency flattener
New resize modes BiCubic and Gaussian, BiCubic is now default for GUI
Fixed vulnerability in libpng, upgraded to newest libpng version
Support for spot colors using non-DeviceXXX alternate colorspaces
New image scaler routines
Added Preconv handler
Flattener improvements
UI Improvements
Added PDF/UA template output for command line version
Fixed patterned image mask transcoding
Fixed an issue in annotation processing so /XYZ 0 0 0 is auto converted to /XYZ null null null as required by Reader
DeviceN images are converted to composite if no spots are required for output
New transparency handler for transmode 2
Implemented re-processing run for output formats that cannot handle transparency
Fixed regression bug for shaded imagemasks
Images always flush now filtered data sources at finish
String length in PostScript can now exceed 65535 chars
Added -M level3 option
Fixed subset takeover for Illustrator X generated EPS with eexec generated subsets
Improved patterned imagemask processing (as Smask)
shfill implementation
Inproved incremental load for TTF fonts
EPS generation now works without epsrdll.dll using PDF renderer
Updated Freetype to current version
Updated zlib to current version
Added more L3 support to the interpreter, activate by -M preconv
Added support for CID fonts as written by OV
Fixed CMap generation for generated fonts
Added omitClipRegion feature to script
Added overprint preview to directImageout (CMYK only)
Fixed -M keepsrccolor mode for ICCbased/CalRGB colors
Fixed use of CMD converter from GUI for Windows 7/8
Added GUI option for error on missing fonts in PStillConfig.inf
Added UTF-8 output option for text
Changes for Windows 8.1 and Windows 10 (Windows version)
Added 'Gray Detect' feature for images 

