Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.github/workflows/build.yml
#	README.md
#	common/common.cpp
#	examples/embedding/embedding.cpp
#	examples/json_schema_to_grammar.py
#	examples/llama.android/llama/src/main/cpp/llama-android.cpp
#	examples/llama.swiftui/README.md
#	examples/llama.swiftui/llama.swiftui.xcodeproj/project.pbxproj
#	examples/lookahead/lookahead.cpp
#	examples/parallel/parallel.cpp
#	examples/passkey/passkey.cpp
#	ggml/CMakeLists.txt
#	ggml/src/CMakeLists.txt
#	ggml/src/ggml-cpu/CMakeLists.txt
#	requirements.txt
#	requirements/requirements-all.txt
#	scripts/fetch_server_test_models.py
#	tests/test-chat.cpp
#	tests/test-json-schema-to-grammar.cpp

examples/quantize/quantize.cpp

@@ -9,6 +9,7 @@
 #include <unordered_map>
 #include <fstream>
 #include <cmath>
+#include <cctype>
 
 struct quant_option {
     std::string name;