Merge pull request #122 from KeenS/hotfix

some bug fixes
fix #123. add another build option 'USE_C11_FEATURE'
add reference to botbot.me
move pic_import and pic_export to lib.c
support renaming export
Match the case of package name for find_package.

This mismatch causes build failure on Linux.

Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
Merge pull request #126 from omasanori/findlibedit

Match the case of package name for find_package.
Merge pull request #127 from KeenS/hotfix

silence warning from gc.c
Merge pull request #129 from KeenS/hotfix

correct error message
add commentary on pic_get_args
update xhash
primary symbol to object hashtable support (dictionary)
add dictionary-size
dictionary-delete raises an error when no binding with given name is registered
add dictionary documentation
Merge branch 'dictionary'
add libs.rst
experimentally changed document nest lavel
use topic directive instead
try using glossary directive