Move to Bintray

Fixes #2 (closed)

.ci-templates/conan.yml

 .build-template:
     variables:
-        CONAN_USERNAME: "ptr-project+sqlite_utils"
+        CONAN_USERNAME: "ptr"
         CONAN_CHANNEL: "testing"
         CONAN_ARCHS: "x86_64"
         CONAN_UPLOAD: "https://api.bintray.com/conan/ptr-project/conan"
         CONAN_UPLOAD_RETRY: 3
-        CONAN_UPLOAD_TOKEN: $BINTRAY_PASSWORD
         CONAN_STABLE_BRANCH_PATTERN: "stable/*"
-        CONAN_BUILD_POLICY: "all"
-        CONAN_LOGIN_USERNAME: $BINTRAY_USER
-        CONAN_PASSWORD: $BINTRAY_PASSWORD
+        CONAN_LOGIN_USERNAME: ${BINTRAY_USER}
+        CONAN_PASSWORD: ${BINTRAY_PASSWORD}
     before_script:
         - sudo pip install --upgrade conan_package_tools
         - conan user
@@ -17,7 +15,9 @@
         - env
         - python build.py
     rules:
-      - if: '$CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "master"'
+      - if: '$CI_COMMIT_TAG =~ /^stable/'
+        when: always
+      - if: '$CI_COMMIT_TAG =~ /^testing/'
         when: always
 
 gcc-8: