GraphsOptim v0.1.0

Merged pull requests:

• FAQ algorithm (#6) (@aurorarossi)
• Add JET to tests (#9) (@gdalle)
• GOAT algorithm (#11) (@aurorarossi)
• added fractional_chromatic_number, fractional_clique_number (#13) (@dstahlke)
• Transfer from gdalle and update docs (#15) (@gdalle)
• Fix contributing guidelines (#16) (@gdalle)
• Shortest path implementation (#17) (@adfeel220)
• Rm docs manifest and clarify contributing (#18) (@gdalle)
• Vertex cover (#19) (@olegfafurin)
• Added maximum (weight) cliques (#21) (@matbesancon)
• independent set (#22) (@matbesancon)

Closed issues:

• Add JET.test_package to test suite (#8)