This release:

• reorganizes zeptoIP to separate out IPv4-specific interfaces from common interfaces in anticipation of coming IPv6 support (note that this contains many breaking changes, so be aware that this likely will affect your own code)
• adds USB strings including a serial number derived from the Quad SPI flash ID on RP2040 and RP2350 platforms
• adds a rp2350_16mib platform which makes 16 MiB of Quad SPI flash available to the user (2 MiB for the flash dictionary, 14 MiB for block/FAT32 storage) for RP2350 boards such as the Pimoroni Pico Plus 2 which have 16 MiB of Quad SPI flash
• fixes bugs in USB CDC support that were likely responsible for the problems observed on certain versions of macOS
• fixes SPI clock divider calculation on the RP2040 and RP2350
• makes sysclk available on all platforms
• removes the vestigial references to a PIO base address from the CYW43439 driver
• fixes a bug in fat32-tools::read-file where the maximum read length in bytes and the file offset in bytes were swapped; this is a breaking change
• adds a feature to zeptoed where autoindent can be turned on and off for buffers, which is useful when pasting text from a terminal
• fixes a bug where an improperly closed local variable declaration in extra/rp_common/net/simple_net.fs, now extra/rp_common/net/simple_net_ipv4.fs, was causing issues

Note that this release still uses the Raspberry Pi pico-sdk USB VID:PID because pid.codes has not formally assigned a unique VID:PID to zeptoforth.