Bump dependency on 'network' package so it compiles with LTS-13

Derive Eq, Ord and Show instances for Settings data type

Bump HaskellNet version to <0.6

(see fpco/stackage#960)

Bump tls version dep, after having verified it worked with tls-1.3.*

Commit bc814b63 renames one of the
functions, making this a backwards-incompatible change, so I'm upping
the version number to 0.3.0.0 even though the other changes are
relatively minor.

Update gmail example

Re-export Network.HaskellNet.* modules

see dpwright#10

Rename sslDisableCertficateValidation to sslDisableCertificateValidation

Allow connection with disabled certificate validation

Also set fast_finish to true

Build the normal build with GHC versions 7.4, 7.6 and 7.8, and the
NoUpperBounds build with GHC version 7.8 only.

Setting the "sslLogToConsole" parameter to True will now spit out the
IMAP session log inline, prefixed with "HaskellNet-SSL".

Update HaskellNet-SSL.cabal

Updated network dependencies.
Cheers

move to tls 1.2 and connection 0.2