Suggest to loosen the dependency on rqalpha

Dear developers,

Your project rqalpha-tushare requires "rqalpha==3.0.0" in its dependency. After analyzing the source code, we found that the following versions of rqalpha can also be suitable without affecting your project, i.e., rqalpha 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7. Therefore, we suggest to loosen the dependency on rqalpha from "rqalpha==3.0.0" to "rqalpha>=2.2.0,<=3.0.0" to avoid any possible conflict for importing more packages or for downstream projects that may use ddos_script.

May I pull a request to further loosen the dependency on rqalpha?

By the way, could you please tell us whether such dependency analysis may be potentially helpful for maintaining dependencies easier during your development?

Details:

Your project (commit id: 1b168f41c338f6bd9176c32e15808a8d019b9b3e) directly uses 2 APIs from package rqalpha.

rqalpha.interface.AbstractMod.__init__, rqalpha.data.base_data_source.BaseDataSource.__init__

Beginning fromwhich, 18 functions are then indirectly called, including 10 rqalpha's internal APIs and 8 outsider APIs as follows:

[/HOLALee/rqalpha-tushare]
+--rqalpha.interface.AbstractMod.__init__
+--rqalpha.data.base_data_source.BaseDataSource.__init__
|      +--os.path.join
|      +--rqalpha.data.instrument_store.InstrumentStore.__init__
|      |      +--pickle.load
|      |      +--rqalpha.model.instrument.Instrument.__init__
|      |      |      +--rqalpha.model.instrument.Instrument._fix_date
|      |      |      |      +--datetime.datetime
|      +--rqalpha.data.dividend_store.DividendStore.__init__
|      |      +--bcolz.open
|      |      +--numpy.empty
|      |      +--numpy.dtype
|      +--rqalpha.data.trading_dates_store.TradingDatesStore.__init__
|      |      +--pandas.Index
|      |      +--pandas.Timestamp
|      |      +--bcolz.open
|      +--rqalpha.data.yield_curve_store.YieldCurveStore.__init__
|      |      +--bcolz.open
|      +--rqalpha.data.simple_factor_store.SimpleFactorStore.__init__
|      |      +--bcolz.open
|      +--rqalpha.data.date_set.DateSet.__init__
|      |      +--bcolz.open
|      +--rqalpha.data.daybar_store.DayBarStore.__init__
|      |      +--bcolz.open
|      +--rqalpha.utils.i18n.gettext
|      |      +--rqalpha.utils.py2.to_utf8
|      |      |      +--rqalpha.utils.py2.to_utf8

Since all these functions have not been changed between any version for package "rqalpha" from [2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7] and 3.0.0. Therefore, we believe it is safe to loosen the corresponding dependency.

HOLALee / rqalpha-tushare

Suggest to loosen the dependency on rqalpha #1