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  Working on command-line option support

adding more comments, and cosmetic tweaks

working implementation of hest wrappers for command-line arguments

  Added options.h header file

  Split input functions into their own file and added Diderot_InputVec2

  Changed the naming convention for Input functions to precision independent

  Working on parallel runtime

  Use double precision to compute transforms for images.  We then convert these to the
  target precision.

  Added configure tests for various parallel runtime features.  Also, we now generate
  a config.h file, so autoheader is needed.

  Runtime system updates to support Die and to eliminate race for stabilizing

  Reworked representation of coordinate-space transforms in image objects

  Added partial support for mapping tensors from image space back to world space.
  Still need runtime system support for Hessians (see include/Diderot/inline-image.h)

some more 2x2 matrix math

  Added missing 2D and 4D vector operations

  Added 1D image operations

  Adding more 3x3 matrix support

  added functions to initialize a matrix to zero or the identity

  Adding 3x3 matrix multiplication operations

  Use matrix copy when assigning to matrix variables.

added minf as peer to maxf

  Added lerp functions

  Add normalize3f function

  Fixed typo

  Added missing sqrts

  Split matrix operations into their own file and added matrix (Frobenius) norm

  Added comments

added Diderot_ToImageSpace2f and tweaked Diderot_Inside2f, to get 2D convolution working

  Split up diderot header file into multiple files.

  Added fourth (zero) component to result of cross product.

missing a ; I think

  Added cross3f

  Added trace operator for 2x2, 3x3, and 4x4 matrices

  Added -m64 flag to C compiles and fixed some warnings.

  Added support for tracking output state variables through ILs and generating
  a print function in the C target.

  Switch to compiler-generated initially code.

  Added runtime interface to support creation of initial array/collection
  of strands

new implementation of inside

  Workaround for the fact that gcc does not handle vec2f_t correctly

  Add vector conversions and 2D vector support

  Fixing bugs in runtime code

  Working on vr-MIP example

  Streamlined code for real to int conversions

  Working on code generation

  Working on C target and code generation

  merged changes

  Fixing type errors

  Fix type errors

  Move diderot.h header to include/Diderot