Android Client:

• Added alphaBlend function for blending two colors.
• Added scroll_content_alignment support in gallery.

iOS Client:

• Added alphaBlend function for blending two colors.
• Added new styles to blur extension: extra_light, regular, prominent, and the system_*_material family (including the _light and _dark variants).
• Added static images prefetch API for DivData.
• Added support for the scroll_content_alignment parameter in gallery to control the position of the item selected via default_item or scroll_to; the default value is start for scroll_mode="default" and center for scroll_mode="paging", and alignment affects scrolling only in paging mode.
• Fixed an issue where a running animator could use a stale end_value when restarted, causing animations to target outdated values after quick consecutive updates.