* FIX color specification "lc N"
* FIX clipping error in filled curves
* FIX segfault if "refresh" command follows an interrupted replot
Changes 4.4.1:
* NEW Support the "%s" format specifier in strftime()
* NEW Optional 6th data column in candlesticks style to specific box width
* NEW If integer arithmetic i*j or i**j would overflow, return value as a real
* NEW "set style circle radius <default-radius>"
* FIX autoconfiguration of readline support in OSX
* FIX font problems in win terminal
* FIX Protect against runaway recursion by limiting depth of nested functions
* FIX metapost terminal: Fix inheritance of line thickness by text strings
* FIX cairo terminals could segfault on certain enhanced text strings
* FIX pdfcairo output to stdout now works
* FIX font ",size" in non-enhanced mode postscript terminals
* FIX Do a better job of estimating the width of UTF-8 encoded strings
* FIX baseline bug in canvas terminal rotation of enhanced text
* FIX Allow "with labels" to work for binary input data
* FIX update user GPVAL variables after plot in table mode
* CHANGE depth-sorting of pm3d surfaces now applies jointly to all in the plot
* CHANGE 3D impulses are now always drawn from z=0
* CHANGE Enable HIDDEN_QUADTREE by default
* CHANGE Enable "set fit errorvariables" by default
* CHANGE Regardless of current timefmt, read time from binary files as a binary
* CHANGE do not limit 3D rotation to 0<rotx<180
