SUBDIRS sequences
Replace -1 ret code
update assert statement
update benchmark result
update README
update sample code
update example code
fix warnings
r3_tree_render_dot(const node * tree, FILE *fp); support
more graphviz API
README update
Update changelog for 1.3.0
update README
update README
merge graphviz function prototype into r3.h
r3 function prefix

- Remove ltrim_slash.
- Add "r3_" prefix to r3_str.c functions.
fix header file include
reduce variable declaration
Update include_headers
combine match_entry functions into r3.h