cglm

• optimize non-optimized with SIMD vec4 operations with SSE/SSE2
• add one and zero helpers for vectors
• fix scale_as for zero length vector: now it it returns zero
• new functions for vec3 and vec4: (s suffix stands for scalar)
  • _mul: multiply two vector (replacement for _mulv)
  • _div: div two vector
  • _divs: div vector with scalar
  • adds: add scalar to each components of vec
  • subs: sub scalar from each components of vec
  • addadd, subadd, muladd, muladds helpers ( += )
• optimize rotate vec3 using matrix4, add same function for mat3
• add some tests for vectors
• update docs for new apis

• invalidate axis-aligned boundng box util
• aabb printer function
• helper for check aabb is valid or not
• get sign of float helper as -1, +1 and 0 for vec3, vec4 and for single floats
• aabb box size and radius
• project / unproject functions
• isnan, isinf and isvalid heleprs for vectos
• vector version of sqrt
• lerp for numbers, vec3 and vec4
• add call versions of vector extension
• major quaternion update
  • change WXYZ order to XYZW
  • normalize quat in quat_mat4
  • normalize axis in quatv
  • quat to mat3
  • transposed versions of quat to mat4/mat3
  • quaternion version of look
  • quaternion version of rotate vector
  • quaternion version of rotate matrix
  • quaternion helpers; get conjugate, inv, angle, axis...
  • fix quaternion multiplication
  • SSE version for quaternion multiplication
  • fix slerp, add lerp
  • look rotation
  • quat to mat4 and quat to mat3
  • add tests, docs

and lots of improvements, bugfixes (and features) may not listed above!

• clamp functions
• fix euler angles (extrinsic -> intrinsic)
• optimize euler angles
• improve build scripts

• frustum (extracting frustum corners, planes...)
• bounding box (aabb)
• possible orthogonal/perpendicular vector func
• min and max vector
• extract perspective parameters (size, fovy)
• new wrappers for lookat (glm_look ...)
• several improvements
• complete documentation

• min and max for vectors
• fix GLM_QUAT_IDENTITY_INIT (wxyz) instead of (xyzw). Addresses #10. (winduptoy)
• rename near and far variable names (windows uses these names as macro)

• now accurate version matrix inversion is default
• decompose projection matrix funcs
• convenient macros for UP vector for lookAt
• vec: helper / special macros for initializing white and black colors
• inverse (opposite) of vectors
• Fixed missing alignment on MinGW + GCC (smx-smx)

• ARM Neon support for matrix multiplication
• re-organise file/folder structure;
  • remove cglm prefix from file names
  • separate vec4 operations into separate header
• add missing header documentations
• fix raw matrix multiplication
• supress warnings

• add removed functions as macro as DEPRECATED for compatibility
• fix build scripts

• _dup (duplicate) is changed to _copy. For instance glm_vec_dup -> glm_vec_copy
• OpenGL related functions are dropped to make this lib platform/third-party independent
• build conf for windows
• add some vector operations
• add cmocka to unit tests
• optimizations