chore: bump package info.
feat(binauralbeat): update api to use match latest web audio api specification

 - waveType is now set to one of 4 strings "sine", "square", "sawtooth", or "triangle"
 - the setWaveTable method has been replaced with setPeriodicWave

misc:
 - convert tabs to spaces.
 - version bump
 - update copyright year
chore: update dist and example js files
test: update tests

 - the setPeriodicWave test is currently broken, will need to update allen mocks to fix this
Merge branch 'feature/update-to-latest-html-spec' into develop
Merge branch 'release/0.4.0'