Ox 10.0: new features and fixes

New features and enhancements in version 10.0
Fixed problems in version 10.0

New features and enhancements in version 10.0

graphics
- aareas are now boxed by default
- DrawQQ now allows for error bands Also thinning QQ plot to 1024 points (thinning is done along X axis)
- histograms are now a `vector' instead of a separate section
- Added arrows and stars
- dropped Postscript support
- DrawPath, DrawPPath, allows SVG style paths (M,L,Q,S) with fill and stroke.
- Line colour, width, pattern, symbol can now specified as a string argument to the draw functions. Colours can use HTML name or html hex code.
- New symbols "star" and "Star"
- DrawZ "filled" (ZMODE_FILLED) to fill the area between two vectors
- DrawAdjust(ADJ_AREA_,...) use -1 for last area.
- OpenDrawWindow(GWG_file) to open a GWG file; OpenDrawWindow("") to reopen a graph for further additions after ShowDrawWindow.
syntax
- nullish operator ?? .NaN and .Null are nullish, but FALSE is not, so
```
decl x = arr.key ?? -1;
```
  sets x to -1 if arr.key is .Null or .NaN, or to arr.key otherwise. This is different from
```
decl x = arr.key || -1;
```
  because x would be set to -1 whenever arr.key evaluates to false.
- Keyed indexation can now use member-style notation, provided the key is an identifier. So arr["aa"] equals arr.aa.
- Lambda function can changed local variable through indexation. Lambda function can still not modify local variables.
- !string and !array now work as expected
functions, new and extended:
- asinh, acosh, atanh dropr, dropc for named fields in keyword array
- cumsum skips over leading missing values
- fsplit: split filename in components
- insertc(<>, 0, 1) and insertr(<>, 0, 1) now return <0>.
  Both functions can now have indices to specify the location of insertion.
  The spline function can have 4th argument "kernel".
- isnull can also check reference:
```
    decl a; 
```
  then isnull(&a) returns TRUE, whereas isnull(a) is a runtime error.
- range(n) to construct row vector with 0,...,n-1.
- strings: added array of formats (this does not vectorize a column or row vector)
- submat: negative r2,c2 are increased by row/column size.
Input/Output
- "%J" print/scan format for JSON.
- (macOS,linux) getfiles("*.zip") does not work if file name contains dots.
- When renaming a zipped file (including oxdata) when there are dots in the name (not just for the final extension): content could not be found.
- scan %v can now read <1:4;[5]*0> but not yet 2:[2]8
- fo = fopen("stdout:", "w") uses stdout as the opened file, which can be printed to with fprintln. Subsequent fclose(fo) does not do anything.
Other
- Changed default search path: user part comes after system (and without include and apps).
- macOS dynamic library is now .dyld instead of .so, and linked with dynamic instead of bundle. All DLLs need to be recompiled for Ox 10.
- Updated libcurl, renamed oxcurl.oxh (the header for the dll wrapper) to oxlibcurl.oxh (to contrast more clearly with oxurl.oxh).
- Now also checking if import is already present by name (case insensitively): this allows for a linked-in oxo/ox file to be imported (header file still needs to be found when running). This allows me to import ox/packages/ForecastAB when it is already in PcGive. S is quite a rare use case.
- Allowing leading ~ in include/import path to indicate default user home folder.
- Ox export adjustments: FOxGetDataMember returns array with member names if name argument is "" or NULL. New functions: OxValGetDbl, OxValGetI32, OxValGetMatVal, OxValSetMatVal.
- -xpath command line argument
- -rphalf command line argument

Fixed problems in version 10.0:

Fixed potential crash when using parallel loops in successive lambda functions.
Now always allocating empty string (instead of using NULL) to make oxo file behave exactly like running the code. This avoids a bug in using Python from oxo file.
Switched off dynamic mode for openMP: caused warning on amd notebook and possibly crash
Reading array from oxo file (oxobj.c): now using OxValSetArray, so that allocated size is set correctly, rather than undefined.

This file last changed .