v7.5.0 is released

New fetures

• Add clean_dcache_cb and lv_disp_clean_dcache to enable users to use their own cache management function
• Add gpu_wait_cb to wait until the GPU is working. It allows to run CPU a wait only when the rendered data is needed.
• Add 10px and 8px built in fonts

Bugfixes

• Fix unexpected DEFOCUS on lv_page when clicking to bg after the scrollable
• Fix lv_obj_del and lv_obj_clean if the children list changed during deletion.
• Adjust button matrix button width to include padding when spanning multiple units.
• Add rounding to btnmatrix line height calculation
• Add decmopr_buf to GC roots
• Fix division by zero in draw_pattern (lv_draw_rect.c) if the image or letter is not found
• Fix drawing images with 1 px height or width
• Fix selection of options with non-ASCII letters in dropdown list