Clean dependencies

• Mark matplotlib as an optional dependency
• Remove nptyping

Bugfix : annotations + visualization

Bugfixes :
- single annotation at start of recording would produce wrong annotation object
- visualization of events with custom Fs

Update Event plotting

Visualize:

• splitting of events
• merge of short events
• tolerance on events

Updates to plotting

• Score now stores ref and hyp
• Plotting now provides option to display or hide legend
• Plotting now provides option to give axis as input parameter
• Add plotIndividualEvents() function

Bugfix plotSampleScoring

Release 0.02

Bugfix plotSampleScoring

v0.0.1

First pre-release for internal testing.
This release is available on pip