Update master 2.x version numbers for NEON and Smart Contract Framework

[devhawk]

We need to ship a new version of NEON (packaged as a global tool as per #159) and the smart contract framework. As part of that release, these packages need new version numbers. Since these tools are in maintenance mode, I believe we should continue to update the version numbers manually.

• current version of Neo.SmartContract.Framework is v2.9.3.1. I recommend moving to v2.10

  • as per Semantic Versioning we should bump the minor version number because we have added backward compatible changes

• current version of Neo.Compiler.MSIL is v2.4.1.1. I recommend moving to v2.6.

  • Again, as per Semantic Versioning we should bump the minor version number because we have added backward compatible changes
  • The current version of Neo.neon-de is v2.5.11. Even though neon-de is a separate fork, it seems reasonable to bump neon an extra minor version number to make it clear that neon is the latest and greatest version of the tool to use