added new service class and method

• get Epics on Board(See #289 )
• added new Service Class AgileIssueService(See #299)
• dotenv v4 support(See #300)
• add new Service Class GreenHopper BurnDownChartService(See #302 )
• add new function deleteWorkflow (See #303)

update PHP Major version to 7.1

• Update PHP to ^7.1
• fixed broken NoOperationMonologHandler changed by AbstractProcessingHandler return type definition.

Added remove watcher by accountId

See #294

add get users function for v3 api

• add get users function for v3 api(See #283 )
• modified issue transition function allowed query param(See #284 )

update monolog dependancy

update monolog dependancy to v2.(#281 )

1.42.0: Merge pull request #279 from lesstif/analysis-3wOv01

• changed project component class(see #265 )
• drop php 5.5 (see #267, #269 )
• add new method findUsersByQuery in UserService(see #274)
• fixed some typo(see #272 , #277)

Add new service to handle JIRA's project components.

See #264

fixed invalid project type

See #260

fixed v3 api search function

see #253

fixed class variable typo.

1.38.1

Merge branch 'master' of github.com:lesstif/php-jira-rest-client