STAINED GLASS PLS?

My minecarts whenever I want them back they just disappear! Is that an update or something? If it is, can u make the minecarts go back to u? Anyways, Can u pls add stained glass dyed leather armour and books and quills. Adventure mode is also a thing I kinda want other wise its great?????????

Edclh about Minecraft: Pocket Edition, v1.1.3