Bump working version to 1.1.4
sync CHANGES and bump to 1.2.0
rename `make prepare` to `make depend` to fit convention better
Make the output less shouty and be more consistent with colours
Invert the colours to have the active job heading be coloured instead.
Makefile generation cleanup

* Export OPAMVERBOSE and OPAMYES so they can easily be overridden
* Formatting of Makefile is now better wrt newlines
* Improve colours again
sync CHANGES
update README
Spaces
Replace internal tuple state by nicer records

As the state is abstract since 2 commits, this does not break any user code.
Expose missing clock combinators
Add a combinator for OS.Time
Add basic random combinators

No fancy entropy sources yet.
Expose a combinator for Io_page
Fix typo
Add optional arguments to replace default time, clock and random combinators, when that's possible.
Fix tests to compile with latest cohttp