re initial, no working fft, faders, checkboxes
New SnareMarch preset and updated KickPower

The snare sounds like it would be used for marching. If you can make it
brighter without making it sound funny, please do...

The kick was too dark for general purpose. Shortened it, raised it in
the frequency range and added more noise.
updated Fader to use setHintText
enables setting of the display text.
spectrum analysis implemented
Merge pull request #1434 from curlymorphic/fader

updated Fader to use setHintText
Draw grid lines on widget
Bitcrush: small improvement, also add some stuff to math & constants
Constants:
- calculate all in long double so as to improve the accuracy of our pre-calculated constants
- add some possibly useful constants: reciprocal of pi, square of pi, and reciprocal of e
Math:
- new math convenience functions: absMax, absMin
Merge pull request #1439 from diizy/master

Bitcrush: small improvement, also add some stuff to math & constants
Update FxMixer.cpp

prevent double adding of jobs
Merge pull request #1440 from LMMS/stable-1.1

Update FxMixer.cpp
More fixes (Bitcrush, Linkwitz-Riley filter)
Merge pull request #1441 from diizy/master

More fixes (Bitcrush, Linkwitz-Riley filter)
EQ update

filters before downsampling changed
ignore wet dry knob
scale lines on widget
filter type switch loading correctly
analyser code all move to one location
implment analyze button
remove redundant code
analyser display omprovments
Merge pull request #1 from LMMS/master

rebase from master
Merge pull request #2 from curlymorphic/master

rebase from master
Check major/minor version before setting theme directory
Merge pull request #1442 from tresf/stable-1.1

Check major/minor version before setting theme directory
Fix scroll bar gap

Closes #1437
Bump DualFilter high cutoff to 20k

Closes #1395.
EQ updates to UI, Initial Ui complete