corrplot v0.92

corrplot 0.92

Changes

• Fix #228: assigning colors incorrectly when is.corr = FALSE. (thanks, @bixiou)
• Fix #232: some functions wrongly marked as pure.
• Fix colorlegend lables alignment when type = 'lower'.
• Revise the document.
• tl.pos add a new parameter 'l' in corrplot(). (thanks, @ggordn3r)
• Add new function COL1(): Get sequential colors.
• Add new function COL2(): Get diverging colors.