changing isPeriodicTech to isTrigTech
adding isTrigTech() at the Chebfun level.
making sure abs() works for trigtech objects.
making sure chebcoeffs of trigufns are chebcoeffs.
making sure cumsum works for all trigfuns.
addBreaks() first converts a trigfun to a chebfun
adding polyfit for trigfuns.
adding a test for polyfit for trigfuns.
fixing a very very small typo.
power method for trigfuns
Merge remote-tracking branch 'upstream/development' into fix-trigops
Merge branch 'development' of https://github.com/chebfun/chebfun into fix-trigops
renaming isTrigTech to isPeriodicTech.
Minor modifications.
Merge remote-tracking branch 'origin/development' into fix-trigops
removing a bug from polyfit
adding horzcat for mixed objects with trigfuns.
making polyfit for trigfuns more abstract.
adding more tests for trig polyfit
adding restrict for trigfuns at chebfun level.