Render stats table
Add stats table IDs & defaults
renderTime() returns elapsed
Get the stats table cells
Add times array and updateStats()
Store breath times and update stats
Highlight important stats
Update breathNoDisplay only if exhaling
Rm toggle()
Rename var: stats -> statsDisplay
Rename var: halfBreathStartTime -> halfBreathStart
Rename var: elapsed -> halfBreathSplit
Make halfBreathSplit an instance var
Comments & semicolons
Store statistics
Delete associated stats when deleting a breath
Rename: updateStats() -> updateStatsDisplay()
Rename: exhalation -> exh, inhalation -> inh
HTML: stats table: move breath on last row
Update displays from history when deleting breaths