#21: fixed up some stuff
refactored matrix to lower case
Merge branch 'dev' into arithmeticOverhaul
#21: committing for backup
#21: added in changeSign
#21: committing for backup
#21: finished inverse and determinant
#21: this works!
#21: modified interface. things work now
#21: fixing stuff
#21: closes #21
#20: finished inverse