force recreation of AndroidManifest.xml
show value for currencies filter preference
add solve squere equation operation
use integer constants for keypad modes
rename keypad mode constants
refactor layout attributes
refactor keypad buttons display logic
handle hyper button click
code spaces cleanup
add hyperbolic operations and functions (without complex numbers for now)
hyperbolic functions on complex argument
Merge branch 'keypad-modes'
bump version code to 16
convert operation converts from dimensionless values
remove unused support library
add landscape layout (WIP)
fix landscape layout weights
landscape units keypad
some buttons in landscape layout moved
orientation preference