Compile error: The version of openzeppelin's "pragma solidity" statement doesn't match with the version of VvispRegistry.sol

[nujabes403]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Other... Please describe:

Current behavior

After initializing vvisp, vvisp compile command throws following error:

{ component: 'general',
  formattedMessage: 'openzeppelin-solidity/contracts/ownership/Ownable.sol:1:1: SyntaxError: Source file requires different compiler version (current compiler is 0.5.0+commit.1d4f565a.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version\npragma solidity ^0.5.2;\n^---------------------^\n',
  message: 'Source file requires different compiler version (current compiler is 0.5.0+commit.1d4f565a.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version',
  severity: 'error',
  sourceLocation: 
   { end: 23,
     file: 'openzeppelin-solidity/contracts/ownership/Ownable.sol',
     start: 0 },
  type: 'SyntaxError' }
{ component: 'general',
  formattedMessage: 'openzeppelin-solidity/contracts/math/SafeMath.sol:1:1: SyntaxError: Source file requires different compiler version (current compiler is 0.5.0+commit.1d4f565a.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version\npragma solidity ^0.5.2;\n^---------------------^\n',
  message: 'Source file requires different compiler version (current compiler is 0.5.0+commit.1d4f565a.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version',
  severity: 'error',
  sourceLocation: 
   { end: 23,
     file: 'openzeppelin-solidity/contracts/math/SafeMath.sol',
     start: 0 },
  type: 'SyntaxError' }

Expected behavior

vvisp compile command should compile Migrations.sol without an error.

Minimal reproduction of the problem with instructions

mkdir myDapp && cd myDapp && vvisp init && vvisp compile

What is the motivation / use case for changing the behavior?

Environment

vvisp version: X.Y.Z


Environment:
- Node version: v8.11.3
- Operating system: OS X high sierra

Others:

[nujabes403]

Currently, vvisp has a dependency on openzeppelin-solidity library. The version is specified as "openzeppelin-solidity": "^2.1.0" in package.json which means allowing update to the most recent major version as long as the first number of version matches.

However, openzeppelin released 2.2.0 version with chaning pragma solidity versioning to "^0.5.2". (You can see the change in this PR: OpenZeppelin/openzeppelin-contracts@b7d60f2#diff-ff7dca5f7cee2c9e49ab96d5f85d00a0)

In vvisp, the pragma statement for all contracts is pragma solidity >=0.5.0 <0.6.0; which doesn't match with openzeppelin 2.2.0 version's. So there are 2 solution.
1: Downgrade openzeppelin version to 2.1.3
2: Modify pragma statement for all contracts in vvisp.

I think 1 is better than 2, so I downgraded the version of openzeppelin-solidity to 2.1.3.

[JhChoy]

Closed with #124