first commit (parallel)
bug fixed (get: key doesn't exist)
all functional added, but  not yet tested
tmp commit
it works (but strangely)
tests added
small improvements
bug fixed (strings with spaces)
merge komanov master
override method getNumberOfUncommittedChanges
FileMap corrections (intrfaces)
override mthod from intrefaces: getTableNames()
set up merge
corrections in load
Merge remote-tracking branch 'origin/Parallel' into Parallel
correct remarks
bug fixed in remove
creation diff using lambda
creation diff using lambda
еще один lock