2.062 regression workaround =\
improved bio.bam.reader docs
improved bio.bam.writer and bio.bam.pileup docs
improving docs...
further documentation improvements
also improved BamRead interface:
* allow to remove tags
* allow to set sequence with different length
bio.bam.reader docs: intro with examples
implemented idiomatic toString for BamRead

Other improvements:

* _is_slice is now hackishly contained in the chunk
  (name is zero terminated, so one byte is available)

* Each BamRead now contains a pointer to the reader

* SamReader and BamReader now share common interface
  bio.bam.abstractreader.IBamSamReader
fixes in Value.toString
faster BamRead.toString
EAGAIN/EWOULDBLOCK handling
fix const in json serialization
throw exceptions in case of file reading problems
new awesome serialization to sam/json
updated example 6
SAM header JSON formatting
msgpack output for header
multiple BAM reader (2.061+)
refactored random access a bit
a few improvements
simple MAF parser