v1.1.0 changes to add temporary or some write support.
CBREAD, CBAPPEND and CBWRITE cb_buffer.c functions
v1.1.0 clang -Weverything compiler warnings.
v1.1.0 set_cursor name not null check
v1.1.0 contentlength from nameoffset and offset
v1.1.0 empty_names NULL terminators
v1.1.0 readlength to seekable read offset
v1.1.0 readlength to seekable read offset
v1.1.0 correct faulty state setting