3.5.4

• Improved removing of default build flags using build_unflags option (issue #1712)
• Export LIBS, LIBPATH, and LINKFLAGS data from project dependent libraries to the global build environment
• Don't export CPPPATH data of project dependent libraries to framework's build environment (issue #1665)
• Handle "architectures" data from "library.properties" manifest in lib_compat_mode = strict
• Added workaround for Python SemVer package's issue #61 with caret range and pre-releases
• Replaced conflicted "env" pattern by "sysenv" for "platformio.ini" Dynamic Variables" (issue #1705)
• Removed "date&time" when processing project with platformio run command (issue #1343)
• Fixed issue with invalid LD script if path contains space
• Fixed preprocessor for Arduino sketch when function returns certain type (issue #1683)
• Fixed issue when platformio lib uninstall removes initial source code (issue #1023)