feat!: Use Arc instead of Rc in bam::buffer, such that the buffer can be used in a multithreaded context

[johanneskoester]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 20028781206

Details

• 5 of 7 (71.43%) changed or added relevant lines in 1 file are covered.
• 20 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.02%) to 81.912%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/bam/buffer.rs	5	7	71.43%

Files with Coverage Reduction	New Missed Lines	%
src/bam/ext.rs	1	91.88%
src/bam/mod.rs	1	83.84%
src/tbx/mod.rs	1	82.24%
src/bam/buffer.rs	3	53.85%
src/bcf/record.rs	3	82.54%
src/bam/record.rs	11	75.51%

Totals
Change from base Build 18534912582:	-0.02%
Covered Lines:	2785
Relevant Lines:	3400

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💛 - Coveralls