internal/restrict.json: Add GL_LINES and GL_POINTS enums; See #48
internal/gles2: regenerate using Glow
internal/gl: regenerate using Glow
internal/restrict.json: add GL_PROGRAM_POINT_SIZE_EXT
internal/gl: regenerate using Glow
Allow Meshes to specify their Primitive type (Triangles, Lines, Points). See #48
gl2: Support the new Mesh Primitive types; See #48
README: mention drawing points and lines; Fixes #48