MACS v2.2.7 (broken pip pkg)

Bugs fixed

1. MACS2 has been tested on multiple architectures to make sure it
   can successfully generate consistent results. Currently the
   supported architectures are: AMD64, ARM64, i386, PPC64LE, and
   S390X. Thanks to @mr-c, @junaruga, and @tillea! Related to issue
   #340, #349, #351, and #359; to PR #348, #350, #360, #361, #367,
   and #370. The lesson is that if the project is built on Cython and
   is aimed at memory efficiency, we should specifically define all
   int/float types in pyx files such as int8_t or uint32_t using
   either libc or numpy (c version) instead of relying on Cython
   types such as short, long, double.

2. MACS2 setup script will check numpy and install numpy if
   necessary. PR #378, issue #364

3. bdgbroadcall command will correctly add the score column (5th
   column). The score (5th) column contains 10 times of the average
   score in the broad region. PR #373, issue #362

4. The missing test on bdgopt subcommand has been added. PR #363

5. The obsolete option --ratio from callpeak subcommand has
   been removed. PR #369, issue #366

6. Fixed the incorrect description in README on the 'maximum
   length of broad region is 4 times of d' to 'maximum gap for
   merging broad regions is 4 times of tag size by default'. PR #380,
   issue #365.

• Other

1. CODE OF CONDUCT document has been added to MACS2 github
   repository. PR #358