Fix 'declaration-after-statement' errors in parser.c
Add -Werror=declaration-after-statement to CFLAGS
Merge pull request #346 from caitp/declaration-after-statement

Add -Werror=declaration-after-statement to CFLAGS for gcc/clang
Bump version number to 0.4.
Merge pull request #347 from rillian/0.4

Bump version number to 0.4.
Remove TODO List.
Update README.

- Updated the function list.
- Added contributors section.
- Added users section.
Merge pull request #349 from RickEyre/readme-update

Update README.
Remove contributor list from the README.

We already have a separate list in AUTHORS, and I think it's
probably more friendly not to list everyone's email addresses
on the project's github landing page.
Merge pull request #350 from rillian/readme

Remove contributor list from the README.