added:

dir -> directory walker similar to dirent
    dirwatch -> lets you watch a directory for changes in another thread
    vec -> generic vector

CMakeLists.txt

@@ -1,18 +1,22 @@
-add_library(Colla STATIC 
-    socket.c 
-    tracelog.c 
-    http.c 
-    strstream.c 
-    strview.c 
-    str.c 
-    coroutine.c 
-    os.c 
-    fs.c 
-    file.c 
-)
-
-IF (WIN32)
-    target_link_libraries(Colla ws2_32.lib)
-ELSE()
-    # posix
-ENDIF()
+add_library(Colla STATIC 
+    socket.c 
+    tracelog.c 
+    http.c 
+    strstream.c 
+    str.c 
+    coroutine.c 
+    os.c 
+    fs.c 
+    file.c 
+    dir.c 
+    dirwatch.c
+)
+
+if(MSVC)
+    target_link_libraries(Colla ws2_32.lib)
+    target_compile_options(Colla PRIVATE /W4)
+else()
+    target_link_libraries(Colla pthread)
+    target_compile_options(Colla PRIVATE -Wall -Wextra -Wpedantic)
+    target_compile_definitions(Colla PUBLIC _DEFAULT_SOURCE)
+endif()