build: more details on available modules in README
nco: adding autotest for block mixing
gradsearch: improving internal line search

  * should now work for both min/max utilities
  * needs testing
  * improved and simplified code
gradsearch: fixing order to check exit criteria for line search
optim: modifying invgauss utility and gradsearch example for testing
gradsearch: fixing bug with maximization search direction
gradsearch/autotest: re-enabling maxutility test

  * simply finds the maximum of a multi-variate Gauss function
  * maximized at v={1,1,1...}
  * maximum value of 1
  * works well after previous bug fixes
Merge branch 'master' of ganymede
resamp: adding basic autotest

  * checks that output sample rate is appropriate
  * checks that spectrum is properly frequency-scaled
  * checks that spurs are properly suppressed [disabled]
  * need to implement output interpolator to improve suppression
resamp: cleaning up code, adding useful comments

  * general comments describing the function of each object
  * adding more description of each method
  * removing unnecessary coefficients array in object
resamp/example: adding command-line options to example
resamp: clarifying create() method accepts filter semi-length
resamp/test: fixing typo with window in original signal
resamp: separating functionality of floating and fixed- point phase
resamp/bench: changing filter sizes in benchmarks
resamp: adding linear interpolation for reduced distortion

  * keep track of timing phase internally
  * store filterbank outputs and retain state
  * slows operation down considerably (factor of 2)
  * fixed-point phase is broken
  * code needs major clean-up
resamp: splitting and retaining fixed-point phase version

  * need to clean floating-point phase version
  * convert to fixed-point phase for faster computation
  * compare performance (accuracy and speed) of each
resamp: fixing bug with timing state control logic
resamp/autotest: adding peak side-lobe test, modifying parameters
msresamp: adding basic autotest (needs extensions)