Add .gitignore (#15)

Header-only library (#13)

Update warning about the brokenness of SHA-1

Make build system more flexible (#12)

Add test cases for binary data (#4)

Improve comment

Fix compiler warnings

Enable extra compiler warnings

Fix link to SHA-3 (#9)

Fixed compiler warnings (#8)

Add warining about SHA-1 weakness

Add well known tests and where they can be found online (#7)

Update authorship information

Remove "& 0xffffffff" which is not needed anymore due to using uint32_t

Simplify SHA1::update() loop