removed uiVec2 and iVec2 and replaced them with template struct vec2_t
removed uiVec2 and iVec2 and replaced them with template struct vec2_t

ziacko/TinyWindow,g-pechorin/TinyWindow,ziacko/TinyWindow,ziacko/TinyWindow,g-pechorin/TinyWindow,g-pechorin/TinyWindow