REVIEW: Reorganized global variables for consistency
ADDED: GetWindowHandle() to get native window handle
ADDED: GetDirectoryFiles() to get files list for a DIR

-DBUILD_SHARED_LIBS=OFF == -DSHARED=OFF -DSTATIC=ON
-DBUILD_SHARED_LIBS=ON  == -DSHARED=ON  -DSTATIC=OFF

Fixes #626.

core: workaround window not being rendered till moved on macOS Mojave

Apple ought to fix their OpenGL implementation, but with OpenGL now
deprecated this might not happen.

This has been reported upstream in GLFW in glfw/glfw#1334.
The workaround comes from kovidgoyal/kitty@b82e74f99

This also fixes the HiDPI (Retina) scaling issues reported in #497,
so the workaround is enabled anywhere __APPLE__ is defined.

Previously, if <raylib.h> was #included prior to another header that
defined bool, the compilation would fail.
This is e.g. the case for <perl.h> and <objc/objc.h> which both fall
back to the <stdbool.h> if C99 is available.

The following commit includes <objc/objc.h> in src/core.c, which causes
the same problem.

Avoid this by checking for C99 bool like we already do for C++'s.

A single warning at configuration time is enough.

[physac] Fix physac's fixed time step

[textures] Added SaveKTX()
[rlgl] Exposed rlGetGlTextureFormats()

Added monitor functions

- Using same idea as SetWindowMonitor to take in a index with 0 being the primary monitor.

- Added else so return not compiled twice.

- Added PLATFORM_DESKTOP check for Monitor functions to try to fix issue on android.
- Not sure what return types should be when not on desktop. Added rough guess for now.

- Fixed tabs used instead of 4 spaces

- Get number of monitors
- Get size, physical size and name of primary monitor. Could pass monitor id instead not sure.

Size reduced 91%

WIP

Linux Support for VSCode Project

Linux Support for VSCode Project

merge

Added note on KTX 2.2

REVIEWED: ExportImage()
REVIEWED: ExportMesh()
ADDED: ExportWave()
REMOVED: Internal funcs: SavePNG(), SaveBMP()

NOTE: These changes break the API (parameters order)

Some minor tweaks around

Added a few missing functions to raymath

- Added Vector2MultiplyV
- Added Vector2DivideV
- Added Vector3Divide
- Added Vector3DivideV

Update models.c

fix bug with GenMeshPlane() creating too many vertices/texcoords/normals for the plane mesh

Useful for bitmaps pixelated fonts where anti-aliasing is not desired!
Change also enables additional font generation mechanisms in a future (cleartype, hinting...).

Updated VSCode project to support OSX building / debugging.