Use YAML for storage

[memowe]

See #23

• Implement feature branch
• Document breaking API changes (Changes, POD, README)
• Compare results via profiling

[codecov]

Codecov Report

Merging #24 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #24   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           7      7           
  Lines         176    190   +14     
  Branches       24     24           
=====================================
+ Hits          176    190   +14

Impacted Files	Coverage Δ
lib/EventStore/Tiny.pm	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f1042a0...695af00. Read the comment docs.

[coveralls]

Pull Request Test Coverage Report for Build 219

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 217:	0.0%
Covered Lines:	172
Relevant Lines:	172

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 243

• 18 of 18 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 217:	0.0%
Covered Lines:	184
Relevant Lines:	184

---

💛 - Coveralls