Add an option to prevent the BCs from being automatically adjusted in PDE15S.
Fix typo.
Another typo..
Fix conditional statement.
changin four to trig begins.
renaming the test folder.
constructor for trigtech now works
some other tests pass as well.
diffmat now passes.
most tests in trigtech now pass.
All trigtech tests pass!
starting changes at higher levels
most @chebfun tests pass
All @chebfun tests pass.
making various changes from four to trig.
All tests pass, fourtech is now trigtech.
starting to rename fourcolloc to trigcolloc.
renmaing of fourcolloc to trigcolloc done, tests not modified yet.
All tests pass, fourcolloc is now trigcolloc
adding a trig option also