making sure that chebfun(f) has the same domain as f, if f is a chebfun.
making sure tests pass.
fixing warning for trig based chebfuns.
Merge remote-tracking branch 'origin/development' into fix-chebfun-domain
Modify commit + coding style.
Merge branch 'development' of ssh://github.com/chebfun/chebfun into feature-chebgui-periodic
IVP->ivp
Merge branch 'feature-chebgui-periodic' of https://github.com/chebfun/chebfun into feature-chebgui-periodic
adding a test for constructor.
Merge branch 'fix-chebfun-domain' of https://github.com/chebfun/chebfun into fix-chebfun-domain
Tolerance...
Merge pull request #1306 from chebfun/feature-chebgui-periodic

Making periodic problems work in Chebgui
Merge remote-tracking branch 'origin/development' into fix-chebfun-domain
Merge pull request #1320 from chebfun/fix-chebfun-domain

Fix chebfun domain
Merge pull request #1321 from chebfun/fix-chebfun-warning

fixing warning for trig based chebfuns.
Merge branch 'development' into fix-chebgui-IVPs-2