Improvements and fixes (3.x)

[deakcor]

Improvements :

• Support more textures maps (00591c163e3ca412a4f4cc46274f58d6c3485557)
• Set the right material name (0d9ed2046c003b91ed68df59ab6f98eab56f28b3)

Bug fixes :

• Added more security when creating materials to prevent crash if the material doesn't exist (5ae277ff0132a9de7939d719398433b92cead691)
• Fixed map creation sometimes it can be upper or lower case in mat files (ab7ea725eed3fefc3b1596c35c13d398fe843548)
• Added security if uvs array has wrong size (c8306bcf36f436322684a2d6068ae054554644f6)
• Prevent crash if image file from the mtl doesn't exist (2a226e7a7585b679ca2cc37fbb7779d93f43d813)
• Load the obj even if the mtl doesn't exist (e4bebffbbdcbc6cfe442206088a0e7dc4c5b3fce) fixing issue (https://github.com/Ezcha/gd-obj/issues/2)
• Fixed some issue when there was space at the end of the rows of the mtl file (73d227b49c84476b143051421ed3bcc9b5ce9e56)