[doc] opa/transactions: updated
[enhance] doc/book: Better link for Facebook.
[feature] utils: adding a colorizer for opa using pygments
that appears to be used by github
[doc] book/hello_chat: improved version with author choice
[doc] book: Adding a tip (on-the-fly spell-checking) to the emacs par…
…agraph in the 'Install' section
[enhance] doc/book: In contacts section adding Stack Overflow.
[feature] doc/book: Adding target to make book.epub
[cleanup] doc/book: Proof-reading 2) Getting Opa.
[cleanup] doc/book: Proof-reading 1) Introducing Opa.
[doc] book: updating the hello_recaptacha example with changes in the…
[fix] examples: fixed make rules
this should make the 'make examples' from the root of the repo work
Initial open-source release