Use fixed version ranges

[bpierre]

Fixes #175

Using * could prevent bundlers to separate the versions of internal packages (e.g. webpack with ethers).

Also updates oao to version 2.

[codecov]

Codecov Report

Merging #184 into master will increase coverage by 6.71%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #184      +/-   ##
==========================================
+ Coverage   20.43%   27.14%   +6.71%     
==========================================
  Files          69       81      +12     
  Lines        1282     1477     +195     
  Branches      234      251      +17     
==========================================
+ Hits          262      401     +139     
- Misses       1020     1076      +56     

Flag	Coverage Δ
#unittests	27.14% <ø> (+6.71%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ckages/connect-agreement/src/entities/Signature.ts	100.00% <0.00%> (ø)
...onnect-agreement/src/thegraph/parsers/agreement.ts	80.00% <0.00%> (ø)
...es/connect-agreement/src/thegraph/queries/index.ts	100.00% <0.00%> (ø)
...connect-agreement/src/thegraph/parsers/versions.ts	82.35% <0.00%> (ø)
packages/connect-agreement/src/entities/Signer.ts	76.47% <0.00%> (ø)
...es/connect-agreement/src/thegraph/parsers/index.ts	100.00% <0.00%> (ø)
packages/connect-agreement/src/connect.ts	40.00% <0.00%> (ø)
packages/connect-agreement/src/entities/Version.ts	100.00% <0.00%> (ø)
...ckages/connect-agreement/src/thegraph/connector.ts	52.72% <0.00%> (ø)
.../connect-agreement/src/thegraph/parsers/signers.ts	84.61% <0.00%> (ø)
... and 2 more

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[0xGabi]

Good catch, I tested against the honey-pot repo and is working fine now!