Merge pull request #596 from keep-network/release-solidity/v1.3.0

f9331e2 which is tagged as `solidity/v1.3.0`: 
- Bumps up version in `package.json` to `1.3.0`
- Sets `keep-core` dependency to `1.4.0`
- Sets `sortition-pools` dependency to `1.2.0-pre.3` as there is an independent workstream there for ETH-only staking and a part of `keep-ecdsa` codebase depends on it.

b5c8281 gets the version and dependencies back into development mode:
- Bumps up version in `package.json` to `1.4.0-pre.0`
- Sets `keep-core` dependency to `>1.5.0-pre <1.5.0-rc`
- Brings back `sortition-pools` dependency to `>1.2.0-pre <1.2.0-rc`

solidity/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@keep-network/keep-ecdsa",
-  "version": "1.3.0-pre.0",
+  "version": "1.4.0-pre.0",
   "description": "Smart contracts for ECDSA Keep",
   "repository": {
     "type": "git",
@@ -34,7 +34,7 @@
   },
   "homepage": "https://github.com/keep-network/keep-ecdsa",
   "dependencies": {
-    "@keep-network/keep-core": ">1.3.1-pre <1.3.1-rc",
+    "@keep-network/keep-core": ">1.5.0-pre <1.5.0-rc",
     "@keep-network/sortition-pools": ">1.2.0-pre <1.2.0-rc",
     "@openzeppelin/upgrades": "^2.7.2",
     "openzeppelin-solidity": "2.3.0"