Merge pull request #937 from samoht/master

Add pdfswitch.sty to compile the dev manual
Preserving custom compiler descriptions across the 1.1 update
(also made it more robust w.r.t CWD)
Merge pull request #938 from AltGr/preserve-compilers-1.1

Preserving custom compiler descriptions across the 1.1 update
Bump version to 1.1.0
Re-gen doc
Update CHANGES for 1.1.0
Set default repo to opam.ocaml.org
Merge pull request #939 from AltGr/release-1.1.0

Release Candidate for 1.1.0
Typo in CHANGES