Cut 2.5.1 release

Cut 2.5.0 release

Cut 2.4.2 release

Merge pull request pezmaster31#132 from pezmaster31/split-fix

Fixed - compiler error in bamtools_split.

Minor version bump - 2.4.0

 - Added support for custom header tags.
 - Suppressed clang compiler warnings.

Apologies to all w/ outstanding issues for letting this project sit
idle, but updates will be coming out **much** more quickly now.

Minor version bump - 2.3.0

  * stabilized remote file support
  * additional bug fixes & feature requests
  * bamtools-utils & jsoncpp libs now built as static libs by default
(issue pezmaster31#55)

Fixed: bug where first alignments were dropped after setting explicit…

… merge order

Version 2.2.2

  * Added: BamAlignment::GetArrayTagType()

Fixed: typo in BamReader.h

Version 2.2

 * Added support for running in NodeJS (fixed: piping issues)