BasicContainerWriter utility added

doc/api.rst

@@ -203,6 +203,9 @@ store output elsewhere by subclassing `~fmt::BasicWriter`.
 .. doxygenclass:: fmt::BasicStringWriter
    :members:
 
+.. doxygenclass:: fmt::BasicContainerWriter
+   :members:
+
 .. doxygenfunction:: bin(int)
 
 .. doxygenfunction:: oct(int)

doc/build.py

@@ -72,7 +72,8 @@ def build_docs(version='dev', **kwargs):
       GENERATE_MAN      = NO
       GENERATE_RTF      = NO
       CASE_SENSE_NAMES  = NO
-      INPUT             = {0}/format.h {0}/ostream.h {0}/printf.h {0}/string.h
+      INPUT             = {0}/container.h {0}/format.h {0}/ostream.h \
+                          {0}/printf.h {0}/string.h
       QUIET             = YES
       JAVADOC_AUTOBRIEF = YES
       AUTOLINK_SUPPORT  = NO