Updated build chain and documentation for phase arrows

Update release version

Fix missing braces

Fixed yaxis labels int plot.biwavelet

Merge pull request#70 from vsimko/mastermerging and fixing code from James (jmccreight)

Fixed plot.biwavelet so that the COI extends all the way to the botto……m of the plot

Update description

Update C++ code to avoid following issue: rcpp_row_quantile.cpp:39:24……: warning: ISO C++ forbids variable length array ‘rowData’ [-Wvla]

Updated wtc function to handle user-provided lag1 coefficients

Fixed handling of axis preferences in plot.biwavelet