v0.13.4

CxxWrap v0.13.4

Diff since v0.13.3

Closed issues:

• Version v0.13.3 (#352)

Merged pull requests:

• Add basic support for std::deque (#354) (@abdoei)
• Added support for Val{T} (#355) (@Keluaa)
• Mention stl.hpp in README.md (#356) (@fingolfin)
• Trigger fresh precompilation when .so changes (#357) (@fingolfin)