Add asymptotic verision of hermpts to hermpts().
Tweek tolerances so tests pass on machine.
Remove "cosmetic" (?) thresholding line from chebfun.roots().

This closes #1200.  With this line in place, we can get bizarre things
like the following:

  >> f = 1e18*chebfun(@(x) x - 1.5e4, [1e4 2e4])
  f =
     chebfun column (1 smooth piece)
         interval       length   endpoint values
  [   1e+04,   2e+04]        2    -5e+21    5e+21
  Epslevel = 1.238223e-15.  Vscale = 5.000000e+21.
  >> roots(f)
  ans =
       0

Note that the point 0 isn't even in the domain of this chebfun!

An alternative to removing this line like we do here would be to
eliminate the dependence of the threshold on vscale.
Adding removeDeltas feature.
Update pointValues after removing deltas.
Fixes as suggested by @nickhale.

This works both on 2014a and 2014b on my machine (Mac).
Making CHEBGUI work in 2014b as well as previous versions.

This might cause some conflicts with the IVP branch, however,
I'm sure those can be dealt with when the time comes.
Removing 2014b warning.
Adding one more test for removeDeltas.
Reinstating the logo in chebgui.

For some reason, MATLAB keeps making it disappear when changes
are made to the GUI.
Merge branch 'hotfix-2014-chebgui' into development
Merge branch 'hotfix-2014b-chebsnake' into development
Merge branches 'hotfix-2014-chebgui' and 'hotfix-2014b-chebsnake'
Merge branch 'master' into development
Add equi option for constructing Chebfun2 from equally-spaced samples.
This fix loosens the tolerance (htol) used in roots@chebfun for determining if a root is spurious when it is close to another root. The current tolerance is a bit of too tight, causing a few failures in tests for min, minandmax, etc when 1st-kind points are used. By loosening the current tolerance which was introduced by commit b704d284 by a factor of 10, the failures or crashes related to this are gone.
Adding a LENGTH method for CHEBMATRIX, and tests for size and length.
Merge remote-tracking branch 'origin/fix-chebfun-roots-thresh' into development
Merge remote-tracking branch 'origin/fix-roots' into development
Fix erroneous comment in the documentation for chebtech.classicCheck.

Benham Hashemi points out that this line doesn't make much sense, as it
suggests that happiness is being a constant function.  We don't really need the
line anyway, as the actual happiness requirements are spelled out in some
further detail later below.