Release 4.0.0 - LittleFS updates, Mac M1/ARM support

TWO POTENTIALLY BREAKING CHANGES

1. LittleFS has been upgraded from 2.5.1 to the latest 2.9.3 release. At release 2.6.0 the on-flash format for LittleFS changed. LittleFS >= 2.6.0 can read 2.5.0 formats but not vice-versa.

• If you have not upgraded the LittleFS on your system to 2.6.0 or later, please stick with earlier releases of this package or you will be unable to use the generated filesystems.

2. LFS_NAME_MAX set to 255, the default. It was set in prior releases to 32 for ESP8266 memory reasons but since that platform is EOL there's no reason to limit names so severely.

• If your code is already setting LFS_NAME_MAX to 255, or you don't set it at all (and hence it will default to 255) then this change is a no-op.
• If your code, like on the ESP8266 and older Arduino-Pico releases, does set this define to 32 then, again, the filesystem will not be usable onboard. The fix is to set the constant to 255 (at the same time as updating your LittleFS release)

New binaries

Binaries are now built using GitHub actions and runners, and include ARM-based Mac (M1/M2/M3...) builds.

What's Changed

• Use snprintf instead of sprintf for security reasons by @uztbt #39
• Follow littlefs file name spec, update for compiling for c++ 20, update gitignore for binaries by @Szybet #43
• BREAKING: Move to latest LittleFS release, v2.9.3 by @earlephilhower #44

New Contributors

• @uztbt made their first contribution in #39
• @Szybet made their first contribution in #43

Full Changelog: 3.2.0...4.0.0

Release 3.2.0 - Add --from-file option

Merge pull request #37 from earlephilhower/readline

Update to the latest Apple compiler for cross

Release 3.1 - Minor ease of use fixes

• Upgrade to LittleFS 2.5.1
• Expand --version information
• Automatically pick FS size for unpack/list

Fix support for paths > 32 bytes in total

Minor update to fix an issue where if the total path depth of a file was >32 it would crash.

Bugfix to match Arduino Core LittleFS config

Merge pull request #2 from earlephilhower/update

 Match the LittleFS version and settings in 8266 core

Update to LittleFS V2

2.5.1-1

Minor build script fix

Add subdirectory support

2.5.0-3

Clean up add'l OS warnings

Initial release

Support fake directory names

Use same renaming scheme to make subdir markers into 0x01/vice versa.