minor spelling correction
including Apache's Varint implementation to support HLL++
update murmurhash to include 64 bit capability
functional (barely) version of HLL++
add test and complete HLLPlus implementation
fix bug related to calculating alpha, should use p rather than fixed value.  also fixed getIndex function based on correction from paper
- fix serialization/deserialization for sparse vs normal
- minor performance enhancements to unsigned int comparator
- reduce max size of sparse array
make sparse test a little tougher
bug fix to encoding hash values
minor spelling correction
Many bug fixes and optimizations
support for merging large numbers of sparse estimators and a test
support for delta encoding and some other optimizations
Bug fixes for encoding with the runlength included and inversion for merge optimization for later
Full daisy chain delta encoding and some bug fixes
Halfway commented and maybe some major improvements if I forgot to commit those already
More javadoc
minor spelling
Merge branch 'hll_plus_plus'

* hll_plus_plus:
  minor spelling
  More javadoc
  Halfway commented and maybe some major improvements if I forgot to commit those already
  Full daisy chain delta encoding and some bug fixes
  Bug fixes for encoding with the runlength included and inversion for merge optimization for later
  support for delta encoding and some other optimizations
  support for merging large numbers of sparse estimators and a test
  Many bug fixes and optimizations
  minor spelling correction
  bug fix to encoding hash values
  make sparse test a little tougher
  - fix serialization/deserialization for sparse vs normal - minor performance enhancements to unsigned int comparator - reduce max size of sparse array
  fix bug related to calculating alpha, should use p rather than fixed value.  also fixed getIndex function based on correction from paper
  add test and complete HLLPlus implementation
  functional (barely) version of HLL++
  update murmurhash to include 64 bit capability
  including Apache's Varint implementation to support HLL++
  minor spelling correction