Adding silverman bandwith based on kernel
Added simple tests against silverman constants in notes
fixed typo
formatting fixes, renamed to normal_constant
docstring standard fix for 'returns'
typo fix
added example of normal_reference vs silverman
example update
interface changes
typo fix
specific bandwidths added to fit for tests
cleaning and bw calc test
Merge pull request #1271 from Padarn/silverman_enhancement

Silverman kernel bandwidth enhancement - Issue #1243